| Abington Department of Public Works | ABNDPW | Abington, MA in Plymouth County | Massachusetts | Plymouth |
| Abington Fire Department | ABIFD | Abington fire department maintains and repairs the wired and wireless fire alarm monitoring system for the Town of Abington | Massachusetts | Plymouth |
| Acton Fire Department | ACTFD | Acton, MA | Massachusetts | Middlesex |
| Acushnet Fire Department | ACUFD | Acushnet, MA | Massachusetts | Bristol |
| Agawam Fire Department | AGAWFD | Agawam, MA | Massachusetts | Hampden |
| Alford Municipal Light Plant | ALFMLP | Town of Alford, Berkshire Count | Massachusetts | Berkshire |
| Amesbury Fire Department | AMESFD | Amesburg, MA | Massachusetts | Essex |
| Amherst Fire Department | AMHEFD | Amherst, MA | Massachusetts | Hampshire |
| Andover Fire Department | ANDOFD | Andover, MA | Massachusetts | Essex |
| Andover Information Technology | ANDOIT | | Massachusetts | Essex |
| Arlington Fire Department | ARLIFD | Arlington, MA | Massachusetts | Middlesex |
| Ashburnham Municipal Light Plant | ASHBML | Ashburnham Municipal Light Plant | Massachusetts | Worcester |
| Ashby Fire Department | ASHYFD | Ashby, MA | Massachusetts | Middlesex |
| Ashfield Fire Department | ASHFFD | Ashfield, MA | Massachusetts | Franklin |
| Ashfield Municipal Light Plant | ASHMLP | Town of Ashfield
Franklin County | Massachusetts | Franklin |
| Ashland Fire Department | ASHLFD | Ashland, MA | Massachusetts | Middlesex |
| AT&T Massachusetts Mobility | ATTMMA | AT&T Mobility
MA all counties | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Athol Department of Public Works | ATHDPW | Athol, MA Streetlights | Massachusetts | Worcester |
| Athol Fire Department | ATHOFD | Athol, MA | Massachusetts | Worcester |
| Attleboro Fire Department | ATTLFD | Attleboro, MA | Massachusetts | Bristol |
| Auburn Fire Department | AUBUFD | Auburn, MA | Massachusetts | Worcester |
| Avon Fire Department | AVONFD | Avon, MA | Massachusetts | Norfolk |
| Axia Networks | ANUE | Athol, Ayer, Barre, Brookfield, Charlton, East Brookfield, Erving, Fitchburg, Gardner, Groton, Leominster, Lunenburg, New Braintree, New Salem, Orange, Petersham, Phillipston, Princeton, Royalston, Shirley, Sturbridge, Warwick, Wendell, West Brookfield, Westminister | Massachusetts | Middlesex, Worcester |
| Axia Networks | ANUW | Adams,Agawam,Alford,Amherst,Ashfield,Becket,Belchrtown,Bernardston, Blandford,Brimfield,Buckland, Charlemont,Cheshire,Chester, Chesterfield, Chicopee, Clarksburg, Colrain, Conway, Cummington, Dalton,Deerfield, E Longmeadow, Easthampton,Egremont,Florida, Gill, Goshen, Granby,Granville,Gt Barrington, Greenfield, Hadley, Hampden, Hancock, Hardwick, Hatfield,Hawley, Heath, Hinsdale, Holland,Holyoke,Housatonic, Huntington, Lanesborough,Lee, Lenox,Leverett, Leyden, Longmeadow, Udlow, Middlefield,Millers Fls,Monroe, Monson, Montague,Monterey,Montgomery,Mt Washington, N Ashford,N Marlborough, N Adams, Northampton,Northfield,Otis, Oalmer, Pelham, Peru,Pittsfield, Plainfield, Richmond,Rowe,Russell, Sandisfld,Savoy,Sheffield,Shelburne,Shelburne Fls,Shutesbury, S Hadley,Southampton, Southwick, Springfield,Stockbridge,Sunderland, Turner Fls, Tryingham, Wales,Ware,Warren,Washington, W Springfield,W Stockbridge,Westfield, Westhampton, Whatley,Wilbraham, Williamsburg,Williamstown, Windsor, Worthington | Massachusetts | Berkshire, Franklin, Hampden, Hampshire, Worcester |
| Ayer Department of Public Works | AYERMA | Town of Ayer Massachusetts Streetlights | Massachusetts | Middlesex |
| Ayer Fire Department | AYERFD | Ayer, MA | Massachusetts | Middlesex |
| Becket Fire Department | BECKFD | Becket, MA | Massachusetts | Berkshire |
| Bedford Fire Department | BEDFFD | Bedford, MA | Massachusetts | Middlesex |
| Bedford Public Works | BEDFRD | Town of Bedford, MA | Massachusetts | Middlesex |
| Bellingham Fire Department | BELLFD | Bellingham, MA | Massachusetts | Norfolk |
| Belmont Fire Department | BELMFD | Belmont, MA | Massachusetts | Middlesex |
| Belmont Municipal Light Plant | BELMA | Town of Belmont | Massachusetts | Middlesex |
| Berkshire Health Systems | BHS1MA | Berkshire County | Massachusetts | Berkshire |
| Berlin Fire Department (MA) | BRLNFD | Berlin, MA | Massachusetts | Worcester |
| Berlin Highway Department | TWBRLN | Worcester county. Town Wide | Massachusetts | Worcester |
| Bernardston Fire Department | BERNFD | Bernardston, MA | Massachusetts | Franklin |
| Beverly Fire Department | BEVEFD | Beverly, MA | Massachusetts | Essex |
| Billerica Fire Department | BILLFD | Includes all Fire Alarm and Municipal Fiber in Billerica, MA | Massachusetts | Middlesex |
| Blackstone Fire Department | BLACFD | Blackstone, MA | Massachusetts | Worcester |
| Blandford Municipal Light Plant | BLDMLP | Town of Blandford
Hampden County | Massachusetts | Hampden |
| Bolton Fire Department | BOLTFD | Bolton, MA | Massachusetts | Worcester |
| Boston Fire Department | BOSTFD | Boston, MA | Massachusetts | Suffolk |
| Bourne Fire Department | BOURFD | Bourne, MA | Massachusetts | Barnstable |
| Boxborough Fire Department | BOXBFD | Town of Boxborough, MA | Massachusetts | Middlesex |
| Boxford Fire Department | BOXFFD | Boxford, MA | Massachusetts | Essex |
| Boylston Fire Department | BOYLFD | Boylston, MA | Massachusetts | Worcester |
| Boylston Municipal Light Plant | BOYLML | Boylston, Ma - Worcester County | Massachusetts | Worcester |
| Braintree Electric Light Department | BELD | Braintree, MA | Massachusetts | Norfolk |
| Braintree Electric Light Department - Broadband | BBELD | Braintree, MA - Broadband Division | Massachusetts | Norfolk |
| Braintree Fire Department | BRAIFD | Braintree, MA | Massachusetts | Norfolk |
| Breezeline | BZLMA | Salisbury, Amesbury, Haverhill | Massachusetts | Essex |
| Bridgewater Fire Department | BRIDFD | Bridgewater, MA | Massachusetts | Plymouth |
| Brimfield Fire Department | BRIMFD | Brimfield, MA | Massachusetts | Hampden |
| Broadview Networks | BRVWMA | Entire State of Massachusetts | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Brockton Fire Department & City Fiber | BCKTFD | Fire alarm and city fiber | Massachusetts | Plymouth |
| Brookfield Fire Department | BROOFD | Brookfield, MA | Massachusetts | Worcester |
| Buckland Fire Department | BUCKFD | Buckland, MA | Massachusetts | Franklin |
| Cambridge Fire Department | CAMBFD | Cambridge, MA | Massachusetts | Middlesex |
| Cambridge Network Solutions, LLC | CMBRNS | Middlesex: Arlington, Bedford, Billerica, Burlington, Cambridge, Chelmsford, Framingham, Lexington, Lincoln, Lowell, Malden, Marlboro, Natick, Newton, Somerville, Sudbury, Waltham, Watertown
Norfolk: Brookline, Needham, Wellesley
Suffolk: Allston/Brighton, Boston
Worcester: Northboro, Southboro, Westboro | Massachusetts | Middlesex, Norfolk, Suffolk, Worcester |
| Cambridge Street Lights | CAMBSL | Cambridge, MA | Massachusetts | Middlesex |
| Canton Fire Department | TWNCAN | Town of Canton, MA | Massachusetts | Norfolk |
| Carlisle Fire Department | CARLFD | Carlisle, MA | Massachusetts | Middlesex |
| Charlemont Fire Department | CHARFD | Charlemont, MA | Massachusetts | Franklin |
| Charlemont Municipal Light Plant | CHRMLP | Town of Charlemont | Massachusetts | Franklin |
| Charlton Fire Department | CHRLFD | Charlton, MA | Massachusetts | Worcester |
| Charter Communications | CHRTMA | Charter Communications in Massachusetts | Massachusetts | Berkshire, Bristol, Franklin, Hampden, Hampshire, Middlesex, Worcester |
| Chatham Fire Department | CHATFD | Chatham, MA | Massachusetts | Barnstable |
| Chelmsford Fire Department | CHELFD | Fire alarm cable in Chelmsford, MA | Massachusetts | Middlesex |
| Chelsea Emergency Management | CHLSFD | City of Chelsea Massachusetts Fire Alarm Attachments | Massachusetts | Suffolk |
| Cheshire Fire Department | CHESFD | Cheshire, MA | Massachusetts | Berkshire |
| Chester Fire Department | CHSTFD | Chester, MA | Massachusetts | Hampden |
| Chester Municipal Electric Light Department | CHMUEL | Town of Chester only | Massachusetts | Hampden |
| Chesterfield Municipal Light Plant | CHSMLP | Town of Chesterfield
Hampshire County | Massachusetts | Hampshire |
| Chicopee Municipal Light Plant | CEL | City of Chicope, MA including Westover Air Reserve Base | Massachusetts | Hampden |
| Chilmark Fire Department | CHILFD | Chilmark, MA | Massachusetts | Dukes |
| City of Boston | BOSTFB | City of Boston code for Fiber | Massachusetts | Suffolk |
| City of Boston | BOSTSL | All Street lights within: Allston, Boston, Brighton, Charlestown, Dorchester,
East Boston, Hyde Park, Jamaica Plain,
Mattapan, Roslindale, Roxbury, South Boston
West Roxbury | Massachusetts | Suffolk |
| City of Brockton - Highway Department | CTYBHD | Brockton - Highway Department | Massachusetts | Plymouth |
| City of Chelsea Department of Public Works | CHLDPW | City of Chelsea Massachusetts | Massachusetts | Suffolk |
| City of Framingham D.P.W. Highway Dept. | TWNFMH | Framingham, MA. / Street lights, Lights arms, Additional lights on poles | Massachusetts | Middlesex |
| City of Gardner - MA | CYGRDN | GARDNER CITY LIMITS WITHIN WORCESTER COUNTY | Massachusetts | Worcester |
| City of Gloucester - Public Works | GLOUPW | City of Gloucester | Massachusetts | Essex |
| City of Gloucester Fiber | GLCSFB | Fiber Attachments only for City of Gloucester, MA | Massachusetts | Essex |
| City of Lawrence DPW | LWRDPW | City of Lawrence, MA municipal fiber | Massachusetts | Essex |
| City of Lowell (MA) | LWLLFD | Lowell, MA - Street lights and Fire alarm | Massachusetts | Middlesex |
| City of Lynn | LYNISD | Street Light code for Lynn, MA | Massachusetts | Essex |
| City of Marlborough Department of Public Works | MRBDPW | Marlborough, MA | Massachusetts | Berkshire, Middlesex |
| City of Melrose | MLRSEV | Poles with EV chargers attached | Massachusetts | Middlesex |
| City of Melrose | MLRSSL | Pole mounted street lights within the City of Melrose MA | Massachusetts | Middlesex |
| City of Melrose | MRMSPW | Melrose City Limits | Massachusetts | Middlesex |
| City of New Bedford DPI | NEWBED | City of New Bedford DPI | Massachusetts | Bristol |
| City of Newton | CTYNEW | City of Newton, Massachusetts | Massachusetts | Middlesex |
| City of Northampton Central Services | NOHOCS | Northampton, Florence and Leeds in Hampshire County | Massachusetts | Hampshire |
| City of Northampton, IT Services | NOHOIT | City of Northampton IT Services | Massachusetts | Hampshire |
| City of Quincy | CTYQCY | Quincy, MA | Massachusetts | Norfolk |
| City of Salem | SLFDMA | City of Salem Mass located in Essex County - Fire Department and Streetlight Code | Massachusetts | Essex |
| City of Somerville | CTYSMV | City of Somerville | Massachusetts | Middlesex |
| City of Waltham | WLTMFD | Fire Department & Street Light - Waltham, MA | Massachusetts | Middlesex |
| City of Worcester - Department of Public Works & Parks | CTYWRS | City of Worcester, MA | Massachusetts | Worcester |
| Clarksburg Fire Department | CLRKFD | Clarksburg, MA | Massachusetts | Berkshire |
| Clinton Fire Department | CLNTFD | Clinton, MA | Massachusetts | Worcester |
| Cohasset Fire Department | COHTFD | Coahsset, MA | Massachusetts | Norfolk |
| Colrain Municipal Light Plant | COLMLP | Town of Colrain | Massachusetts | Franklin |
| Comcast Massachusetts | CMCTL | Londonderry Office - Middlesex, Worchester Counties (Acton, Ashburnham, Ashby, Ayer, Baldwinville, Bedford, Bolton, Boxborough, Clinton, Concord, Devens, East Templeton, Fitchburg, Gardner, Hanscom AFB, Hudson, Lancaster, Leominster, Lincoln, Littleton, Lunenburg, Marlborough, Maynard, Otter River (Templeton), Phillipston, Shirley, South Lancaster, Sterling, Stow, Sudbury, Templeton, Townsend, Westminster, West Templeton, Winchendon) | Massachusetts | Middlesex, Worcester |
| Comcast Massachusetts | CMCTNR | Woburn Office - Essex, Middlesex and Worchester Counties (Amesbury, Andover, Beverly, Billerica, Boxford,Bradford Burlington, Byfield, Carlisle, Chelmsford, Danvers, Dracut, Essex, Georgetown, Gloucester, Groveland, Hamilton, Haverhill, Ipswich, Lawrence, Lexington, Lowell, Lynn, Lynnfield, Manchester, Marblehead, Melrose, Merrimac, Methuen, Middleton, Nahant, Newbury, Newburyport, North Andover, North Billerica, North Chelmsford, North Reading, Peabody, Reading, Rockport, Rowley, Salem, Salisbury, Saugus, Stoneham, Swampscott, Tewksbury, Topsfield, Tyngsboro, Wakefield, Wenham, West Newbury, Westford, Wilmington, Woburn) | Massachusetts | Essex, Middlesex, Worcester |
| Comcast Massachusetts | CMCTP | Plymouth Office - Barnstable, Bristol, Dukes, Nantucket, Norfolk, Plymouth Counties (Air Station Cape Cod aka Otis Military Ins, Abington, Aquinnah, Avon, Barnstable, Bourne, Braintree, Brewster, Bridgewater, Brockton, Buzzard, Bay, Carver, Cataumet, Chatham, Chilmark, Cohasett, Dennis, Duxbury, East Bridgewater, Eastham, Easton, Edgartown, Falmouth, Forestdale, Halifax, Hanover, Hanson, Harwich, Hingham, Holbrook, Hull, Humarock. Hyannis, Kingston, Marshfield, Mashpee, Menemsha, Milton, Monument Beach, Nantucket, Norwell, Oak Bluff, Onset, Orleans, Otis Air Staion, Pembroke, Plymouth, Plympton, Pocasset, Provincetown, Quincy, Randolph, Raynham, Rockland, Sagamore, Sagamore Beach, Sandwich, Scituate, Stoughton, Teaticket, Tisbury, Truro, Vineyard Haven, Wareham, Wellfleet, West Bridgewater, West Tisbury, Weymouth, Whitman, Wollaston, Woods Hole, Yarmouth) | Massachusetts | Barnstable, Bristol, Dukes, Nantucket, Norfolk, Plymouth |
| Comcast Massachusetts | CMCTSB | South Boston Office - Essex, Middlesex, Norfolk, Suffolk Counties (Allston/Brighton, Arlington, Back Bay/Beacon Hill, Boston, Brookline, Canbridgre, Central Boston, Charlestown, Chelsea, Chestnut Hill, Dorchester, East Boston, Everett, Fenway, Hyde Park, Jamaica Plain, Malden, Mattapan, Medford, Mission Park, North Dorchester, North End, Revere, Roslindale, Roxbury, Somerville, South Boston, South Dorchester, South End, West Roxbury, Winchester, Winthrop) | Massachusetts | Essex, Middlesex, Norfolk, Suffolk |
| Comcast Massachusetts | CMCTT | Taunton Office - Bristol, Middlesex, Norfolk, Plymouth, Worchester Counties (Acushnet, Ashland, Attleboro, Bellingham, Belmont, Berkley, Blackstone, Canton, Dartmouth, Dedham, Dighton, Dover, Fairhaven, Fall River, Foxborough, Framingham, Franklin, Freetown, Holliston, Hopedale, Hopkinton, Lakeville, Mansfield, Marion, Mattapoisett, Medfield, Medway, Mendon, Middleborough, Milford, Millis, Natick, Needham, New Bedford, Newton, Norfolk, North Attleboro, Norton, Norwood, Plainville, Rehoboth, Rochester, Seekonk, Sharon, Sherborn, Somersett, Swansea, Taunton, Walpole, Waltham, Watertown, Wayland, Wellesley, Weston, Westwood, Wrentham) | Massachusetts | Bristol, Middlesex, Norfolk, Plymouth, Worcester |
| Comcast Massachusetts | CMCTWM | Westfield Office - Franklin, Hampden, Hampshire and Worcester Counties (Agawam, Amherst, Bernardston, Buckland, Chester, Conway, Deerfield, Erving, Gill, Granby, Granville, Greenfield, Hardwick, Hatfield, Holyoke, Huntington, Longmeadow, Monson, Montague, Northampton, Northfield, Palmer, Pelham, Shelburne, South Hadley, Southwick, Springfield, Sunderland, Ware, Warren, Westfield, Westhampton, West Springfield, Whately, Williamsburg) | Massachusetts | Franklin, Hampden, Hampshire, Worcester |
| Concord Fire Department | CONRFD | Concord, MA | Massachusetts | Middlesex |
| Concord Municipal Light Plant | CMLP | Concord Municipal Light Plant | Massachusetts | Middlesex |
| Consolidated Communications | CNSDMA | Hancock | Massachusetts | Berkshire |
| Conway Fire Department | CONYFD | Conway, MA | Massachusetts | Franklin |
| Cox Communications | COXMA | Holland, MA | Massachusetts | Hampden |
| CRC Communications | CRCCOM | CRC Communications d/b/a OTELCO/GoNetspeed
Hampshire County, Franklin County, Hampden County, Worcester County | Massachusetts | Franklin, Hampden, Hampshire, Worcester |
| Crossroads Fiber | CRSRDF | Chicopee, Massachusetts (Hampden County) | Massachusetts | Hampden |
| Crown Castle | CRWNMA | (MA) - Belknap County, Essex County, Middlesex County, Norfolk County, Suffolk County | Massachusetts | Essex, Middlesex, Norfolk, Suffolk |
| Crown Castle | NSTRCM | Previously NSTAR Electric/Eversource - Fiber Only | Massachusetts | Middlesex, Norfolk, Suffolk |
| Cummington Fire Department | CUMMFD | Cummington, MA | Massachusetts | Hampshire |
| Dalton Fire Department | DALTFD | Dalton, MA | Massachusetts | Berkshire |
| Danvers Electric | DNVREL | Danvers, MA | Massachusetts | Essex |
| Danvers Fire Department | DNVRFD | Danvers, MA - Essex County | Massachusetts | Essex |
| Danvers IT Deparment | DNVRIT | Danvers / Essex County / Massachusetts | Massachusetts | Essex |
| Dedham Fire Department | DEDHFD | Dedham, MA | Massachusetts | Norfolk |
| Dedham Public Works | DEDHSL | Dedham MA Norfolk County | Massachusetts | Norfolk |
| Deerfield Fire Department | DEERFD | Deerfield, MA | Massachusetts | Franklin |
| Dennis Fire Department | DENNFD | Dennis, MA | Massachusetts | Barnstable |
| Douglas Fire Department | DOUGFD | Douglas, MA | Massachusetts | Worcester |
| Douglas Highway Department | DHWDMA | Code to cover all publicly owned street lights in the Town of Douglas. | Massachusetts | Worcester |
| Dover Fire Department | DOVEFD | Dover, MA | Massachusetts | Norfolk |
| Dracut Fire Department | DRACTY | Town of Dracut | Massachusetts | Middlesex |
| DSCI, LLC | DSCIMA | Massachusetts | Massachusetts | Berkshire, Bristol, Dukes, Essex, Franklin, Hampden |
| Dudley Fire Department | DUDLFD | Dudley, MA | Massachusetts | Worcester |
| Dunstable Fire Department | DUNSFD | Dunstable, MA | Massachusetts | Middlesex |
| East Bridgewater Fire Department | EBRIFD | Plymouth | Massachusetts | Plymouth |
| East Brookfield Fire Department | EBROFD | Worcester | Massachusetts | Worcester |
| East Longmeadow Fire Department | ELONFD | Hampden | Massachusetts | Hampden |
| Eastham Fire Department | EASMFD | Barnstable | Massachusetts | Barnstable |
| Easthampton Fire Department | EASNFD | Hampshire | Massachusetts | Hampshire |
| Easton Fire Department | EASTFD | Bristol | Massachusetts | Bristol |
| Edgartown Fire Department | EDGAFD | Dukes | Massachusetts | Dukes |
| Egremont Fire Department | EGMTFD | Berkshire | Massachusetts | Berkshire |
| Erving Fire Department | ERVIFD | Franklin | Massachusetts | Franklin |
| Essex Fire Department | ESSXFD | Essex | Massachusetts | Essex |
| Everett Wire Department | EVRTWD | all municipal and non participant wire moves including Fire alarm and soon to be cobra head Street lights | Massachusetts | Middlesex |
| Eversource | NSTMAS | Previously NSTAR Electric - Boston, Hyde Park, Dorchester, Roslindale, West Roxbury, Roxbury, Mattapan, South Boston, Brighton, Brookline, Milton | Massachusetts | Norfolk, Suffolk |
| Eversource | NSTMV | Previously NSTAR Electric - Aquinnah, Chilmark, West Tisbury, Tisbury, Oaks Bluff, Edgartown | Massachusetts | Dukes |
| Eversource | NSTNB | Previously NSTAR Electric - New Bedford, Fairhaven, Mattapoisett. Freetown, Lakeville (partial), Dartmouth, Westport | Massachusetts | Bristol, Plymouth |
| Eversource | NSTPLY | Previously NSTAR Electric - Plymouth, Marshfield, Duxbury, Kingston, Plympton, Carver, Rochester, Wareham, Marion, Bourne (North of Canal), Small section of Pembroke and Scituate | Massachusetts | Barnstable, Plymouth |
| Eversource | NSTSOM | Previously NSTAR Electric - Somerville, East Boston, Charlestown, Winchester, Arlington, Stoneham, Woburn, Cambridge, Chelsea | Massachusetts | Middlesex, Suffolk |
| Eversource | NSTSOU | Previously NSTAR Electric - Framingham, Hopkinton, Hollison, Natick, Acton, Wayland, Sudbury, Maynard, Sherborn, Ashland | Massachusetts | Middlesex |
| Eversource | NSTWAL | Previously NSTAR Electric - Lincoln, Carlisle, Burilington, Bedford, Lexington, Watertown Waltham, Weston, Newton, Needham | Massachusetts | Middlesex, Norfolk |
| Eversource | NSTWLP | Previously NSTAR Electric - Walpole, Sharon, Medway, Bellingham, Medfield, Millis, Norfolk, Dover, Westwood, Canton, Dedham | Massachusetts | Norfolk |
| Eversource | NSTYAR | Previously NSTAR Electric - Yarmouth, Bourne, Falmouth, Sanwich, Mashpee, Barnstable, Dennis, Brewster, Harwich, Chatham, Orleans, Eastham, Wellfleet, Provinetown, Truro | Massachusetts | Barnstable |
| Eversource | WMEHAD | Previously Western Massachusetts Electric - Amherst, Easthampton, Hadley, Hatfield, Huntington, Leverett, Montgomery, Pelham, Russell (partial svc), Savoy, Southampton, Sunderland, Westhampton, Whately, Ashfield, Bernardston, Buckland, Chesterfield, Chester (partial svc), Colrain, Conway, Cummington, Deerfield, Erving (partial svc), Gill, Greenfield, Leyden, Montague, Northfield, Plainfield, Shelburne, Worthington | Massachusetts | Berkshire, Franklin, Hampden, Hampshire, Worcester |
| Eversource | WMEPIT | Previously Western Massachusetts Electric - Becket, Blandford, Cheshire (partial svc), Dalton, Hancock (partial svc), Hinsdale, Lanesboro, Lee, Lenox (partial svc), Middlefield, New Ashford, Otis, Peru, Pittsfield, Richmond, Sandisfield, Savoy, Tolland, Tyringham, Washington, Windsor | Massachusetts | Berkshire, Hampden |
| Eversource | WMESPR | Previously Western Massachusetts Electric - Agawam, Granville, Longmeadow, Ludlow, Southwick, Springfield, West Springfield | Massachusetts | Hampden |
| Extenet Systems | XNETMA | All of Massachusetts | Massachusetts | Barnstable, Bristol, Essex, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk |
| Fairhaven Fire Department | FAIRFD | Bristol | Massachusetts | Bristol |
| Falmouth Fire Department | FALMFD | Barnstable
Note - code does not have a contact or any active users. | Massachusetts | Barnstable |
| Fiber Connect, LLC | BFCMA | Current Coverage: Monterey, MA / Egremont, MA | Massachusetts | Berkshire |
| Fibertech Networks (Crown Castle) | FBTCMA | All of Massachusetts | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Fitchburg Fire Department | FTBGFD | Worcester | Massachusetts | Worcester |
| Fitchburg Gas and Electric | FGEMA | Fitchburg Gas and Electric d/b/a Unitil - FG&E services the following; CTY of Fitchburg, Town of Lunenburg, Town of Ashby, Town of Townsend | Massachusetts | Middlesex, Worcester |
| Fitchburg State University | FTCHSU | Fitchburg State University - Poles are between Cedar House, 30 Cedar and University Police, 32 Clinton and between Conlon Fine Arts 367 North St. and McKay Campus, 67 Rindge Rd (39 poles total)
Poles between 32 Clinton St, Fitchburg, MA 01420 and 26 Willow St, Fitchburg, MA 01420 | Massachusetts | Worcester |
| Five College Net, LLC | FIVECN | Amherst, Granby, Chicopee, Springfield, Hadley, Northampton (all in MA) | Massachusetts | Hampden, Hampshire |
| Foxborough Fire Department | FXBOFD | Note: Code has no active contacts, users, or notification email
Norfolk | Massachusetts | Norfolk |
| Framingham Fire Department | FRAMFD | Town of Framingham | Massachusetts | Middlesex |
| Franklin Fire Department | FRNKFD | (MA) - Norfolk | Massachusetts | Norfolk |
| Gardner Fire Department | GRDNFD | Worcester | Massachusetts | Worcester |
| General Electric Company (MA) | GNRELC | Pittsfield, MA | Massachusetts | Berkshire |
| Georgetown Fire Department | GTWNFD | Essex | Massachusetts | Essex |
| Georgetown Municipal Light Department | GLDGTN | Georgetown, MA | Massachusetts | Essex |
| Gill Fire Department | GILLFD | Franklin | Massachusetts | Franklin |
| Gloucester Fire Department | GLCTFD | City of Gloucester, Essex County MA, 01930 | Massachusetts | Essex |
| Goshen Municipal Light Plant | GOSMLP | Town of Goshen
Hampshire County | Massachusetts | Hampshire |
| Gosnold Electric Light | NPGSND | Non-participating member code for Gosnold Electric Light | Massachusetts | Dukes |
| Gosnold Fire Department | GSNDFD | Dukes | Massachusetts | Dukes |
| Grafton Fire Department | GRFTFD | Worcester | Massachusetts | Worcester |
| Granville Fire Department | GRNVFD | Hampden | Massachusetts | Hampden |
| Great Barrington Fire Department | GTBNFD | Berkshire | Massachusetts | Berkshire |
| Greenfield Fire Department | GRNFFD | Franklin | Massachusetts | Franklin |
| Groton Electric Light | GRTNEL | Groton, Massachusetts | Massachusetts | Middlesex |
| Groton Fire Department | GRTNFD | Middlesex | Massachusetts | Middlesex |
| Groveland Fire Department | GRVEFD | Essex | Massachusetts | Essex |
| Groveland Municipal Electric Department | GRVLND | The Town of Groveland, MA | Massachusetts | Essex |
| Hadley Fire Department | HDLYFD | Hampshire | Massachusetts | Plymouth |
| Halifax Fire Department | HLFXFD | Plymouth | Massachusetts | Plymouth |
| Hamilton Fire Department | HMLNFD | Essex | Massachusetts | Essex |
| Hanover Fire Department | HANVFD | Plymouth | Massachusetts | Plymouth |
| Hanson Fire Department | HANSFD | Plymouth | Massachusetts | Plymouth |
| Hardwick Fire Department | HRDKFD | Worcester | Massachusetts | Worcester |
| Harvard Fire Department | HRVDFD | Worcester | Massachusetts | Worcester |
| Harwich Fire Department | HRWHFD | Barnstable | Massachusetts | Barnstable |
| Hatfield Fire Department | HTFDFD | Hampshire | Massachusetts | Hampshire |
| Haverhill Fire Department | CTYHFD | City of Haverhill | Massachusetts | Essex |
| Haverhill Public Works Department | CTYHSL | Haverhill, Massachusetts, Essex County | Massachusetts | Essex |
| Hawley Fire Department | HWLYFD | Franklin | Massachusetts | Franklin |
| Heath Fire Department | HETHFD | Franklin | Massachusetts | Franklin |
| Hingham Fire Department | HNGMFD | Plymouth | Massachusetts | Plymouth |
| Hingham Municipal Lighting Plant | HMLP | Electric- Town of Hingham, Massachusetts | Massachusetts | Plymouth |
| Holbrook Fire Department | HLBKMA | Norfolk | Massachusetts | Norfolk |
| Holbrook Street Lights | HLBKSL | Holbrook Street Lights, Norfolk | Massachusetts | Norfolk |
| Holden Municipal Light Plant | HLDNML | The town of Holden only (Worcester County) | Massachusetts | Worcester |
| Holyoke Fire Department | CTYHFA | Code needs updating. No active contacts or users.
Holyoke | Massachusetts | Hampden |
| Holyoke Gas and Electric | CTYHGE | Holyoke including Couture Road, Belanger Road, Aimee Avenue, Bleumer Road, Bull Head Road, Freyer Road, Camp Jahn Road, & Beccari Lane in Southampton | Massachusetts | Hampden, Hampshire |
| Hopkinton Fire Department - MA | HOPKFD | Middlesex | Massachusetts | Middlesex |
| Hubbardston Fire Department | HUBNFD | Worcester | Massachusetts | Worcester |
| Hudson Fire Department | HUDNFD | Middlesex | Massachusetts | Middlesex |
| Hudson Municipal Light Plant | HLPDMA | Towns of Hudson and Stow, MA | Massachusetts | Middlesex |
| Hull Municipal Light Plant | HULLML | Hull, MA - Plymouth County | Massachusetts | Plymouth |
| Ipswich Municipal Light Department | IPSWML | Ipswich Municipal Light Plant, Essex County | Massachusetts | Essex |
| Kingston Fire Department | KNGNFD | Kingston, MA | Massachusetts | Plymouth |
| Lakeville Fire Department | LKVLFD | Lakeville, MA | Massachusetts | Plymouth |
| Lancaster Fire Department | LNSTFD | Lancaster, MA | Massachusetts | Worcester |
| Lanesborough Fire Department | LNSBFD | Lanesborough, MA | Massachusetts | Berkshire |
| Lawrence Fire Department | LWNCFD | Lawrence, MA | Massachusetts | Essex |
| Leicester Fire Department | LCSTFD | Leicester, MA | Massachusetts | Worcester |
| Lenox Fire Department | LENXFD | Lenox, MA | Massachusetts | Berkshire |
| Leominster Fire Department | LMTRFD | Leominster, MA | Massachusetts | Worcester |
| Leverett Fire Department | LVRTFD | Leverett, MA | Massachusetts | Franklin |
| Lexington Fire Department | LXGNFD | Lexington, MA | Massachusetts | Middlesex |
| Leyden Municipal Light Plant | LEYMLP | Town of Leyden, Franklin County | Massachusetts | Franklin |
| Lightower Fiber Networks (Crown Castle) | LTFMA | Lightower Fiber Networks service area in Massachusetts | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Lincoln Fire Department | LNCNFD | Lincoln, MA | Massachusetts | Middlesex |
| Littleton Electric Light | LITBOX | Town of Boxborough, MA | Massachusetts | Middlesex |
| Littleton Electric Light | LITLIT | Town of Littleton, MA | Massachusetts | Middlesex |
| Longmeadow Fire Department | LGMWFD | Longmeadow, MA | Massachusetts | Hampden |
| Ludlow Fire Department | LDLWFD | Ludlow, MA | Massachusetts | Hampden |
| Lunenburg Fire Department | LNBGFD | Lunenburg, MA | Massachusetts | Worcester |
| Lynn Fire Department | LYNNFD | Fire Alarm code for Lynn, MA | Massachusetts | Essex |
| Lynnfield Fire Department | LFLDFD | Lynnfield, MA | Massachusetts | Essex |
| Malden Fire Department | MLDNFD | Malden, MA | Massachusetts | Middlesex |
| Manchester Fire Department | MNTRFD | Manchester, MA | Massachusetts | Essex |
| Mansfield Fire Department | MNFLFD | Non-participating member. Mansfield, MA | Massachusetts | Bristol |
| Mansfield Municipal Electric Department | MNFMED | Mansfield Municipal Electric Department in Massachusetts | Massachusetts | Bristol, Plymouth |
| Marblehead Fire Department | MRHDFD | Marblehead, MA | Massachusetts | Essex |
| Marblehead Municipal Light Plant | MARBHD | Marblehead Municipal Light Plant - Essex County | Massachusetts | Essex |
| Marion Fire Department | MRONFD | Marion, MA | Massachusetts | Plymouth |
| Marlborough Fire Department | MRLBFD | Marlboro, MA | Massachusetts | Middlesex |
| Marshfield Fire Department | MRSHFD | Marshfield, MA | Massachusetts | Plymouth |
| Mashpee DPW | MSHPEE | Town of Mashpee, MA | Massachusetts | Barnstable |
| Mashpee Fire Department | MSHPFD | Mashpee, MA | Massachusetts | Barnstable |
| Mass Development Devens | MASSDV | Town of Devens, Middlesex and Worcester Counties | Massachusetts | Middlesex, Worcester |
| Mass Development Finance Agency Utility Department | MDFAUD | Devens parts of Middlesex and Worcester Counties | Massachusetts | Middlesex, Worcester |
| Mass Technology Collaborative | MB123E | Athol, Ayer, Barre, Brookfield, Charlton, East Brookfield, Erving, Fitchburg, Gardner, Groton, Leominster, Lunenburg, New Braintree, New Salem, Orange, Petersham, Phillipston, Princeton, Royalston, Shirley, Sturbridge, Warwick, Wendell, West Brookfield, Westminister | Massachusetts | Middlesex, Worcester |
| Mass Technology Collaborative | MB123W | Adams,agawam,alford,amherst,ashfield,becket,belchrtown,bernardston,blandford,brimfield,buckland,charlemont,cheshire, chester, chesterfield, chicopee , clarksburg, colrain, conway, cummington, dalton,deerfield, e longmeadow, asthampton,egremont,florida, gill, goshen, granby, granville, gt barrington, greenfield, hadley, hampden, hancock, hardwick, hatfield, hawley, heath, hinsdale, holland,holyoke,housatonic, huntington, lanesborough, lee, lenox, leverett, leyden, lngmeagow, udlow,middlefield,millers fls,monroe, monson, montague,monterey,montgomery,mt washington, n ashford,n marlborough,n adams, northampton,northfield,otis, palmer, pelham, peru, pittsfield, plainfield, richmond,rowe,russell,sandisfld,savoy,sheffield,shelburne,shelburne fls,shutesbury, s hadley,southampton, outhwick,springfield,stockbridge,sunderland,olland,turner fls,tryingham,wales,ware,warren,washington, w springfield,w stockbridge,westfield,westhampton, whatley,wilbraham,williamsburg,williamstown,windsor, worthington | Massachusetts | Berkshire, Franklin, Hampden, Hampshire, Worcester |
| Maynard Fire Department | MYNDFD | Maynard, MA | Massachusetts | Middlesex |
| Medfield Fire Department | MDFLFD | Medfield, MA | Massachusetts | Norfolk |
| Medford Fire Department | MFRDFD | Medford, MA | Massachusetts | Middlesex |
| Medway Fire Department | MDWYFD | Medway, MA | Massachusetts | Norfolk |
| Melrose Fire Department | MLRSFD | Fire Department code for Melrose, MA | Massachusetts | Middlesex |
| Melrose IT Department | MLRSIT | Fiber optic cable infrastructure within the City of Melrose, MA | Massachusetts | Middlesex |
| Mendon Fire Department | MNDNFD | Mendon, MA | Massachusetts | Worcester |
| Mendon Upton Regional School District | MURSD | Upton, MA (Worcester County) Mendon, MA (Worcester County) | Massachusetts | Worcester |
| Merrimac Fire Department | MRMCFD | Merrimac, MA | Massachusetts | Essex |
| Merrimac Municipal Light Plant | MERIMC | Essex County | Massachusetts | Essex |
| Methuen Fire Department | MTHNFD | Methuen, MA | Massachusetts | Essex |
| Middleboro Fire Department | MBROFD | Middleboro, MA | Massachusetts | Plymouth |
| Middleboro Gas and Electric Department | MGED | Municipal Electric Department covering the Towns of Middleborough and Lakeville Massachusetts | Massachusetts | Plymouth |
| Middlefield Fire Department | MDDLFD | Middlefield, MA | Massachusetts | Hampshire |
| Middleton Electric Light Department | MELD | Non-participating member code for Middleton Electric Light Department in Essex County, MA | Massachusetts | Essex |
| Middleton Fire Department | MDLNFD | Middleton, MA | Massachusetts | Essex |
| Milford Fire Department | MLFDFD | Milford, MA | Massachusetts | Worcester |
| Millbury Fire Department | MLBYFD | Millbury, MA | Massachusetts | Worcester |
| Millis Fire Department | MLLSFD | Millis, MA | Massachusetts | Norfolk |
| Monson Fire Department (Not Active) | MNSNFD | Monson, MA | Massachusetts | Hampden |
| Montague Fire Department | MNRYFD | Non-participating code for Montague Fire Dept. | Massachusetts | Franklin |
| Natick Fire Department | NTCKFD | Natick, MA | Massachusetts | Middlesex |
| National Grid | NGMA | All National Grid's Massachusetts Service Territory including Nantucket | Massachusetts | Berkshire, Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Needham Fire Department | NEEDFD | Needham, MA | Massachusetts | Norfolk |
| NEON Communications (Crown Castle) | NEONMA | NEON Communications Inc service area in Massachusetts | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| New Bedford Fire Department | NBFDFD | New Bedford, MA | Massachusetts | Bristol |
| New Braintree Fire Department | NBRAFD | New Braintree, MA | Massachusetts | Worcester |
| New Marlborough Fire Department | NMRBFD | New Marlborough, MA | Massachusetts | Berkshire |
| New Salem Fire Department | NSLMFD | New Salem, MA | Massachusetts | Franklin |
| New Salem Municipal Light Plant | NSMLP | New Salem, Franklin County MA | Massachusetts | Franklin |
| Newbury Fire Department | NWBYFD | Newbury, MA | Massachusetts | Essex |
| Newburyport Fire Department | NWPTFD | Newburyport, MA | Massachusetts | Essex |
| Newton Fire Department | NWTNFD | Newton, MA | Massachusetts | Middlesex |
| Non-participating 3rd Party Attacher - Massachusetts | NP3PMA | Non-participating 3rd Party Attacher - Massachusetts | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Non-participating Fire Alarms - Massachusetts | NPFAMA | Non-participating Fire Alarms - Massachusetts | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Non-participating Street Light - Massachusetts | NPSLMA | Non-participating Street Light - Massachusetts | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Norfolk Fire Department | NRFKFD | Norfolk, MA | Massachusetts | Norfolk |
| North Adams Fire Department | NADMFD | North Adams, MA | Massachusetts | Berkshire |
| North Andover Fire Department | NADVFD | North Andover, MA | Massachusetts | Essex |
| North Attleborough Electric | NAED | Town of North Attleborough | Massachusetts | Bristol |
| North Attleborough Electric - Fiber | NAEDFB | Town of North Attleborough - Fiber | Massachusetts | Bristol |
| North Attleborough Fire Department | NATBFD | North Attleboro, MA | Massachusetts | Bristol |
| North Brookfield Fire Department | NBRKFD | North Brookfield, MA | Massachusetts | Worcester |
| North Reading Fire Department | NRDGFD | North Reading, MA | Massachusetts | Middlesex |
| Northampton Fire Department | NOHOFD | Northampton, MA | Massachusetts | Hampshire |
| Northborough Fire Department | NRBHFD | Northborough, MA | Massachusetts | Worcester |
| Norton Fire Department | NRTNFD | Norton, MA | Massachusetts | Bristol |
| Norwell Fire Department | NRWLFD | Norwell, MA | Massachusetts | Plymouth |
| Norwood Fire Department | NRWDFD | Norwood, MA | Massachusetts | Norfolk |
| Norwood Municipal Light Broadband | NRWDBB | | Massachusetts | Norfolk |
| Norwood Municipal Light Department | NRWD | Norwood, MA (Norfolk County) | Massachusetts | Norfolk |
| Oak Bluffs Fire Department | OKBFFD | Oak Bluffs, MA | Massachusetts | Dukes |
| Oakham Fire Department | OKHMFD | Oakham, MA | Massachusetts | Worcester |
| OpenCape Corporation | OPENCC | Massachusetts Counties: Plymouth, Bristol, Barnstable. OpenCape owns and operates a fiber network in Southeastern Massachusetts including Cape Cod | Massachusetts | Barnstable, Bristol, Plymouth |
| Orange Fire Department | ORNGFD | Orange, MA | Massachusetts | Franklin |
| Orleans Fire Department | ORLNFD | Orleans, MA | Massachusetts | Barnstable |
| Otis Fire Department | OTISFD | Code needs updating. No valid contact or active users.
Otis, MA | Massachusetts | Berkshire |
| Otis Municipal Light Plant | OTSMLP | Town of Otis
Berkshire County | Massachusetts | Berkshire |
| Palmer Fire Department | PLMRFD | Palmer, MA | Massachusetts | Hampden |
| Paxton Municipal Light Department | PAXLGT | Worchester County | Massachusetts | Worcester |
| Peabody Fire Department | PFDPBD | Peabody, MA | Massachusetts | Essex |
| Peabody Municipal Light Plant | PMLP | Peabody, MA Essex County; Lynnfield, MA Essex County | Massachusetts | Essex |
| PEG Bandwidth - Massachusetts | PEGMA | Berkshire County | Massachusetts | Berkshire |
| Pembroke Fire Department | PBRKFD | Pembroke, MA | Massachusetts | Plymouth |
| Pepperell Fire Department | PEPLFD | Pepperell, MA | Massachusetts | Middlesex |
| Phillipston Fire Department | PLPNFD | Phillipston, MA | Massachusetts | Worcester |
| Pittsfield Fire Department | PTSDFD | Pittsfield, MA | Massachusetts | Berkshire |
| Plainville Fire Department | PNVLFD | Plainville, MA | Massachusetts | Norfolk |
| Plymouth Fire Department | FDTOP | Town of Plymouth Massachusetts fire alarm and fiber cables | Massachusetts | Plymouth |
| Plympton Fire Department | PYTNFD | Plymypton, MA | Massachusetts | Plymouth |
| Princeton Municipal Light Plant | PMLD | Town of Princeton in Worcester County | Massachusetts | Worcester |
| Provincetown Fire Department | PVTWFD | Provincetown, MA | Massachusetts | Barnstable |
| Public Access Television | PATPBD | Peabody | Massachusetts | Essex |
| Quincy Fire Department | QNCYFD | Quincy, MA | Massachusetts | Norfolk |
| Randolph Fire Department | RNDPFD | Randolph, MA | Massachusetts | Norfolk |
| Raynham Fire Department | RYNMFD | Raynham, MA | Massachusetts | Bristol |
| RCN (Astound Broadband) | RCNMA | Allston-Brighton, Arlington, Boston, Brookline, Burlington, Charlestown, Dedham, Dorchester, Essex, Framingham, Hyde Park, Lexington, Milton, Natick, Needham, Newton, Roxbury, Somerville, South Boston, Stoneham, Wakefield, Waltham, Watertown, West Roxbury, Woburn | Massachusetts | Essex, Middlesex, Norfolk, Suffolk |
| Reading Fire Department | RDNGFD | Reading, MA | Massachusetts | Middlesex |
| Reading Municipal Light Department | RMLD | MA - Reading, North Reading, Wilmington and parts of Lynnfield | Massachusetts | Essex, Middlesex |
| Rehoboth Fire Department | RHBHFD | Rehoboth, MA | Massachusetts | Bristol |
| Revere Fire Department | RVERFD | Revere, MA | Massachusetts | Suffolk |
| Richmond Fire Department | RCMDFD | Richmond | Massachusetts | Berkshire |
| Richmond Telephone Company | RICHTC | Berkshire County, MA – Town of Richmond | Massachusetts | Berkshire |
| Rockland Fire Department | RKLDFD | Rockland, MA | Massachusetts | Plymouth |
| Rockport Fire Department | RKPTFD | Rockport, MA | Massachusetts | Essex |
| Rockport I. S. & Technologies Department | RKPTIS | Rockport, MA - I. S. & Technologies Department - Fiber Only | Massachusetts | Essex |
| Rowe Fire Department | ROWEFD | Rowe, MA | Massachusetts | Franklin |
| Rowley Municipal Lighting Plant | ROWLEY | Town of Rowley, MA | Massachusetts | Essex |
| Russell Municipal Cable | RUSSCB | Hampden County | Massachusetts | Hampden |
| Russell Municipal Electric | RUSCTY | Russell, MA | Massachusetts | Hampden |
| Sherborn Fire Department | SHERMA | Municipality - Middlesex County/Approximately 17 square miles | Massachusetts | Middlesex |
| Shrewsbury Electric and Cable Operations | SELCO | Shrewsbury, MA | Massachusetts | Worcester |
| ShutesburyNET | SHSBUR | Town of Shutesbury, Franklin County | Massachusetts | Franklin |
| South Hadley Municipal Light Plant | SHELD | South Hadley, Ma | Massachusetts | Hampshire |
| Southampton Fire Department | SOHOFD | Southampton, MA | Massachusetts | Hampshire |
| Southborough Fire Department | SBROFD | Southborough, MA | Massachusetts | Worcester |
| Southbridge Fire Department | SBDGFD | Southbridge, MA | Massachusetts | Worcester |
| Southwick Fire Department | SWCKFD | Southwick, MA | Massachusetts | Hampden |
| Spencer Fire Department | CTYSPN | Town of Spencer | Massachusetts | Worcester |
| Springfield Fire Department | SPNGFD | Springfield, MA | Massachusetts | Hampden |
| SQF, LLC | SQFMA | All counties | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Sterling Municipal Light Department | STRL | Sterling, MA | Massachusetts | Worcester |
| Stockbridge Fire Department | SKBGFD | Stockbridge, MA | Massachusetts | Berkshire |
| Stoneham Fire Department | STONFD | Stoneham, MA | Massachusetts | Middlesex |
| Stoneham Public Works | STONPW | Town of Stoneham | Massachusetts | Middlesex |
| Stoughton Fire Department | STGNFD | Stoughton, MA | Massachusetts | Norfolk |
| Stow Fire Department | STOWFD | Stow, MA | Massachusetts | Middlesex |
| Sturbridge Fire Department | STBGFD | Sturbridge, MA | Massachusetts | Worcester |
| Sudbury Fire Department | SDBYFD | Code needs updating for contact/ticket email. No active users.
Sudbury, MA | Massachusetts | Middlesex |
| Sunderland Fire Department | SNLDFD | Sunderland, MA | Massachusetts | Franklin |
| Sutton Fire Department | STTNFD | Sutton, MA | Massachusetts | Worcester |
| Swampscott Fiber Optic | SWMPFO | Town of Swampscott Fiber Optic | Massachusetts | Essex |
| Swampscott Fire Department | SWMPFA | Town of Swampscott Fire Department | Massachusetts | Essex |
| Swampscott MUNI Street Light | SWMPSL | Town of Swampscott MUNI Street Light | Massachusetts | Essex |
| Swansea Public Schools | SWANPS | Swansea Ma | Massachusetts | Bristol |
| Taunton Fire Department | TNTNFD | Taunton, MA | Massachusetts | Bristol |
| Taunton Municipal Lighting Plant | TMLP | Taunton, Raynham, Berkley, North Dighton, Lakeville (Parts), Bridgewater (Parts) | Massachusetts | Bristol |
| Teleport Communications Boston | TCGMA | All of Massachusetts | Massachusetts | Barnstable, Berkshire, Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex, Norfolk, Plymouth, Suffolk, Worcester |
| Templeton Light and Water | TMPTLW | Town of Templeton, MA | Massachusetts | Worcester |
| Tewksbury Fire Department | TWKYFD | Tewksbury, MA | Massachusetts | Middlesex |
| Time Warner Cable (Charter Communications) | TWCMA | Time Warner Cable for all of Massachusetts | Massachusetts | Berkshire, Franklin, Hampden, Hampshire, Worcester |
| Tisbury Fire Department | TSBYFD | Tisbury, MA | Massachusetts | Dukes |
| Tolland Fire Department | TLNDFD | Tolland, MA | Massachusetts | Hampden |
| Topsfield Fire Department | TPSLFD | Topsfield, MA | Massachusetts | Essex |
| Town of Acton | TWNATN | Town of Acton - Street Light & Fiber | Massachusetts | Middlesex |
| Town of Agawam | TWNAWM | Town of Agawam, Massachusetts | Massachusetts | Hampden |
| Town of Andover | ANDSTL | Town of Andover streetlights | Massachusetts | Essex |
| Town of Arlington | ARLSL | Town of Arlington, Massachusetts Street Light | Massachusetts | Middlesex |
| Town of Avon | TWNAVN | Town of Avon, MA | Massachusetts | Norfolk |
| Town of Barnstable | TWBNSL | Barnstable | Massachusetts | Barnstable |
| Town of Billerica | TWNBILL | Town Of Billerica | Massachusetts | Middlesex |
| Town of Brookline DPW | BRKDPW | 6.81 square miles located southwest of Boston within Norfolk County. Infrastructure includes fire alarm and street lights under DPW | Massachusetts | Norfolk |
| Town of Burlington | TWNBUR | Burlington, MA | Massachusetts | Middlesex |
| Town of Canton | CANTSL | Town of Canton - Streetlights | Massachusetts | Norfolk |
| Town of Chelmsford | TWCHEL | Street light and fiber optic cable attachments in Chelmsford, MA | Massachusetts | Middlesex |
| Town of Chester | NPTWCS | Non-participating code for the Town of Chester, MA | Massachusetts | Hampden |
| Town of Cohasset | TWNCOH | Entire town | Massachusetts | Norfolk |
| Town of Cummington Municipal Lighting Plant | TWNCUM | Cummington, MA, Hampshire County | Massachusetts | Hampshire |
| Town of Dunstable | TWDNST | Municipality in Massachusetts, Middlesex County | Massachusetts | Middlesex |
| Town of Franklin MA - Department of Public Works | TWFRNK | Town of Franklin MA | Massachusetts | Norfolk |
| Town of Greenfield | TWNGFD | Town of Greenfield | Massachusetts | Franklin |
| Town of Halifax | HLFXMA | Halifax, MA | Massachusetts | Plymouth |
| Town of Hampden | THMPDN | Town of Hampden, Massachusetts | Massachusetts | Hampden |
| Town of Hanover - Department of Public Works | HNRDPW | Hanover, MA (Plymouth County) | Massachusetts | Plymouth |
| Town of Hingham | HINMUN | Hingham Municipal Fiber | Massachusetts | Plymouth |
| Town of Hopkinton Street Lights | HOPKSL | Town of Hopkinton Street Lights | Massachusetts | Middlesex |
| Town of Lexington DPW | TLXDPW | Lexington DPW | Massachusetts | Middlesex |
| Town of Milton | MLTNFD | Fire Alarm, Street Light, Traffic Light member code for Town of Milton, Massachusetts | Massachusetts | Norfolk |
| Town of Monson, MA | MONSON | Town of Monson, MA | Massachusetts | Hampden |
| Town of Mount Washington | TWNMWA | Town of Mount Washington, MA | Massachusetts | Berkshire |
| Town of Nahant | NAHANT | Nahant, Massachusetts, Essex County | Massachusetts | Essex |
| Town of Natick Department of Public Works | TNADPW | Town of Natick, Middlesex County, Massachusetts | Massachusetts | Middlesex |
| Town of Needham | TWNHAM | Town of Needham (Street Lights) | Massachusetts | Norfolk |
| Town of New Ashford Massachusetts Municipal Light Plant | TASHMA | Ashford, MA Berkshire County | Massachusetts | Berkshire |
| Town of Northbridge | TWNNBR | Town of Northbridge | Massachusetts | Worcester |
| Town of Pepperell | TWPEPL | Middlesex | Massachusetts | Middlesex |
| Town of Plainfield and Plainfield Light and Telecommunications Department | PLNFLD | Planfield, MA, Hampshire County | Massachusetts | Hampshire |
| Town of Plymouth | PLYMTH | Plymouth, MA | Massachusetts | Plymouth |
| Town of Rehoboth | RHBHTW | Rehoboth, MA | Massachusetts | Bristol |
| Town of Rowe / Rowe MLP | ROWEMA | The Town of Rowe in Franklin County | Massachusetts | Franklin |
| Town of Salisbury | TNWSAL | Salisbury, MA 01952 of Essex County, Massachusetts | Massachusetts | Essex |
| Town of Saugus | TWNSGS | Town of Saugus - Essex County | Massachusetts | Essex |
| Town of Saugus Fire Department | SAUGFD | Town of Saugus Fire Department - Essex County | Massachusetts | Essex |
| Town of Scituate | TWNSCT | 17 square miles (18,000 residents) Plymouth County, Massachusetts | Massachusetts | Plymouth |
| Town of Seekonk | TWNSEK | Town of Seekonk, MA | Massachusetts | Bristol |
| Town of Sherborn | SHRBRN | Town of Sherborn, MA – Middlesex County | Massachusetts | Middlesex |
| Town of Southbridge | TWNSBD | Town of Southbridge, Massachusetts - Worcester County | Massachusetts | Worcester |
| Town of Sutton | SUTTON | Town of Sutton, MA | Massachusetts | Worcester |
| Town of Swansea | SWANSE | Street Lights in Swansea | Massachusetts | Bristol |
| Town of Tewksbury | TWKSBY | Town of Tewksbury, Middlesex County | Massachusetts | Middlesex |
| Town of Ware | WAREMA | Town of Ware in Hampshire County | Massachusetts | Hampshire |
| Town of Wareham | TWNWHM | Town of Wareham | Massachusetts | Plymouth |
| Town of Washington/Washington MLP | TWWASH | Town of Washington, MA | Massachusetts | Berkshire |
| Town of Watertown Department of Public Works | WTRNPW | TOWN OF WATERTOWN, MA | Massachusetts | Middlesex |
| Town of Wayland IT Department | WYLNIT | Wayland, MA - municipal fiber | Massachusetts | Middlesex |
| Town of Westborough DPW | WESTBR | Town of Westborough DPW | Massachusetts | Worcester |
| Town of Westford | WSFORD | Within the boundaries of Town of Westford | Massachusetts | Middlesex |
| Town of Weston IT | WSTNIT | Town of Weston Massachusetts | Massachusetts | Middlesex |
| Town of Westport | WSTPRT | Town of Westport in Bristol County | Massachusetts | Bristol |
| Town of Weymouth DPW | TWNWEY | Covers 02191-02188-02189-02190 | Massachusetts | Norfolk |
| Town of Whitman Fire Department | WHITFD | Whitman Fire Department | Massachusetts | Plymouth |
| Town of Whitman Street Lighting Dept. | WHITSL | Town of Whitman code for Street Lights | Massachusetts | Plymouth |
| Town of Wilbraham | TWNWBM | Wilbraham, MA | Massachusetts | Hampden |
| Town of Williamsburg | BURGY | own of Williamsburg, Mass | Massachusetts | Hampshire |
| Town of Williamstown | TWNWIL | Town of Williamstown, Berkshire County, MA | Massachusetts | Berkshire |
| Town of Wilmington | WLMFIB | Town of Wilmington, Massachusetts | Massachusetts | Middlesex |
| Townsend Fire Department | TOWTFD | We own and operate a municipal 100 milliamp wired fire system that runs on utility poles throughout the Town of Townsend. | Massachusetts | Middlesex |
| Truro Fire Department | TRROFD | Truro, MA | Massachusetts | Barnstable |
| TVC Albany/FirstLight | TVCAFL | Formerly BRCMA and 186COM
All counties in MA | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Upton Fire Department | UPTNFD | Upton, MA | Massachusetts | Worcester |
| Uxbridge Police Department | UXBRDG | 30 square miles of Southern Worcester County, bordering the State of Rhode Island, centered between Worcester, MA. and Providence, RI. | Massachusetts | Worcester |
| Verizon Massachusetts | VZCAPE | AQUINNAH, BARNSTABLE, BASS RIVER, BOURNE, BREWSTER, BUZZARDS BAY, CATAUMET, CHATHAM, CHILMARK, DENNIS, EASTHAM, EDGARTOWN, FALMOUTH, GOSNOLD, HARWICH, HYANNIS, MASHPEE, NANTUCKET, OAK BLUFFS, ORLEANS, OSTERVILLE, PROVINCETOWN, SAGAMORE, SANDWICH, SIASCONSET, TISBURY, TRURO, VINEYARD HAVEN, W TISBURY, WELLFLEET, YARMOUTH | Massachusetts | Barnstable, Dukes, Nantucket |
| Verizon Massachusetts | VZCEBA | VZ CENTRAL BOYL/AYER: ACTON, ASHBURNHAM,ASHBY,ATHOL,AUBURN,AYER,BARRE, BERLIN,BOLTON,BOXBOROUGH, BOYLSTON,BRROKFIELD,CARLISLE,CHARLETON, CLINTON,CONCORD,DUDLEY, EAST BROOKFIELD,EAST PEPPERELL, ERVING, FITCHBURG,GARDNER,GRAFTON, GREENDALE, GROTON, HARVARD, HOLDEN, HUBBARDSTON,LANCASTER,LEICESTER, LEOMINSTER, LITTLETON,LUNENBURG, MILLBUR,NEW BRAINTREE,NEW SALEM, NORTH BROOKFIELD, NORTHBOROUGH,OAKHAM,ORANGE, OXFORD, PAXTON,PEPPERELL, PETERSHAM, PHILLIPSTON, PRINCETON, ROYALSTON, RUTLAND, SHIRLEY, SHREWSBURY, SOUTH ASHBURNHAM,SOUTH LANCASTER, SOUTHBRIDGE, SPENCER,STERLING, STURBRIDGE, SUTTON, TEMPLETON,TOWNSEND,WARWICK, WEBSTER, WENDELL, WEST BOYLSTON, WEST BROOKFIELD, WEST CONCORD, WESTBOROUGH, WESTMINISTER, WINCHENDON, WORCESTER | Massachusetts | Franklin, Middlesex, Worcester |
| Verizon Massachusetts | VZCEFF | VZ CENTRAL FRAM/FOX: ASHLAND,ATTLEBORO, BELLINGHAM,DOUGLAS, EASTDOUGLAS,FOXBOROUGH, FRAMINGHAM, FRANKLIN, HOLLISTON, HOPEDALE, HOPKINTON,HUDSON,MANSFIELD,MANSFIELD CENTER, MARLBOROUGH, MAYNARD, MEDFIELD, MEDWAY, MENDON, MILFORD, MILLIS,MILLIS-CLICQUOT, NATICK, NORFOLK, NORTH ATTLEBOROUGH, NORTH ATTLEBOROUGH CENTER, NORTH SEEKONK, NORTHBRIDGE,PLAINVILLE, SHARON, SHERBORN, SOUTHBOROUGH,STOW, SUDBURY, UPTON, UPTON WEST, UXBRIDGE,WALPOLE, WAYLAND, WHITINSVILLE, WRENTHAM | Massachusetts | Bristol, Middlesex, Norfolk, Worcester |
| Verizon Massachusetts | VZMTRE | ALLSTON, BOSTON BELVIDERE ST (BACK BAY), BOSTON BOWDOIN SQ, BOSTON FRANKLIN, BOSTON HARRISON AV BRAINTREE, BRIGHTON, BROOKLINE, CANTON, COHASSET, DEDHAM, DORCHESTER, DOVER, EAST BOSTON, HINGHAM, HOLBROOK, HULL, HYDE PARK, JAMAICA PLAIN, MATTAPAN, MILTON, NEEDHAM, NEWTON, NORWOOD, QUINCY, RANDOLPH, ROSLINDALE, ROXBURY, SCITUATE, SO BOSTON, W ROXBURY, WELLESLEY, WESTWOOD, WEYMOUTH | Massachusetts | Middlesex, Norfolk, Plymouth, Suffolk |
| Verizon Massachusetts | VZMTRW | ARLINGTON, BEDFORD, BELMONT, BURLINGTON, CAMBRDIGE 210 BENT ST, CAMBRDIGE WARE ST, LEXINGTON, LINCOLN, SOMERVILLE, WALTHAM SPRING ST, WALTHAM WEST ST, WATERTOWN, WESTON, WINCHESTER, WOBURN | Massachusetts | Middlesex |
| Verizon Massachusetts | VZNEDR | VZ NORTHEAST DRACUT: AMESBURY, ANDOVER,BILLERICA,CHELMSFORD,DRACUT,DUNSTABLE,GROVELAND,HAVERHILL,LAWRENCE,LOWELL,MERRIMAC,METHUEN,NEWBURY,NEWBURYPORT,NORTH ANDOVER,NORTH READING,SALISBURY,TEWKSBURY,TYNGSBOROUGH,WEST NEWBURY,WESTFORD,WILMINGTON | Massachusetts | Essex, Middlesex |
| Verizon Massachusetts | VZNESA | VZ NORTHEAST SAUGUS: BEVERLY, BOXFORD, CHELSEA,DANVERS, ESSEX, EVERETT, GEORGETOWN, GLOUCESTER, HAMILTON, IPSWICH, LYNN, LYNNFIELD, MALDEN, MANCHESTER, MARBLEHEAD, MEDFORD, MELROSE, MIDDLETON, NAHANT, PEABODY, READING, REVERE, ROCKPORT, ROWLEY, SALEM, SAUGUS, STONEHAM,SWAMPSCOTT,TOPSFIELD, WAKEFIELD,WENHAM, WINTHROP | Massachusetts | Essex, Middlesex, Suffolk |
| Verizon Massachusetts | VZSE | ABINGTON, ACUSHNET, ASSONET, AVON, BERKLEY, BRIDGEWATER, BROCKTON, CARVER, DARMOUTH, DIGHTON, DUXBURY, E BRIDGEWATER, EASTON, FAIRHAVEN, FALL RIVER, FREETOWN, HALIFAX, HANOVER, HANSON, KINGSTON, LAKEVILLE, MANOMET, MARION, MARSHFIELD, MATTAPOISETT, MIDDLEBORO, NEW BEDFORD, NORTON, NORWELL, PEMBROKE (BRYANTVILLE), PLYMOUTH, PLYMPTON, RAYNHAM, REHOBOTH, ROCHESTER, ROCKLAND, SOMERSET, STOUGHTON, SWANSEA, TAUNTON, W BRIDGEWATER, WAREHAM, WESTPORT, WHITMAN | Massachusetts | Bristol, Norfolk, Plymouth |
| Verizon Massachusetts | VZWST1 | ADAMS,AGAWAM,ALFORD,AMHERST,ASHFLD,BECKET,BELCHRTWN,BERNARDSTON, BLANDFORD,BRIMFLD,BUCKLAND,CHARLEMONT,CHESHIRE,CHESTER, CHESTERFLD, CHICOPEE ,CLARKSBURG,COLRAIN,CONWAY, CUMMNGTN,DALTON,DEERFLD,E LONGMEADOW,E HAMPTON,EGREMONT,FLORIDA,GILL, GOSHEN,GRANBY,GRANVILLE,GT BARRINGTON,GREENFIELD, HADLEY,HAMPDEN,HANCOCK,HARDWICK,HATFIELD, HAWLEY,HEATH,HINSDALE,HOLLAND,HOLYOKE,HOUSATONIC,HUNTINGTON,LANESBOROUGH,LEE,LENOX,LEVERETT,LEYDEN,LONGMEAGOW,LUDLOW, MIDDLEFIELD,MILLERS FALLS, MONROE,MONSON,MONSONCNTR, MONTAGUE,MONTEREY,MONTGOMERY,MT WASHINGTON, NEW ASHFORD,NEW MARLBOROUGH, N ADAMS,N AMHERST, NORTHAMPTON,NORTHFIELD,OTIS,PALMER,PELHAM,PERU,PITTSFLD,PLAINFLD,RICHMOND,ROWE,RUSSELL, SANDISFLD,SAVOY,SHEFFLD, SHELBURNE,SHELBURNE FALLS,SHUTESBURY,S AMHERST,S DEERFLD,S HADLEY,SOUTHAMPTON,SOUTHWICK,SPRINGFLD, STOCKBRIDGE,SUNDERLAND,TOLLAND,TURNER FALLS,TRYINGHAM,WALES,WARE,WARREN,WASHINGTON,WSPRINGFLD,W STOCKBRIDGE, WESTFLD, WHAMPTON,WHATLEY,HWILBRAHAM,WILLIAMSBURG, WILLIAMSTOWN WINDSOR, WORTHINGTON | Massachusetts | Berkshire, Franklin, Hampden, Hampshire, Worcester |
| Verizon Massachusetts Business | VZBMA | Verizon Business in Massachusetts - Entire State | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Verizon Rhode Island | VZRINO | ASHTON, BARRINGTON, BLACKSTONE, BRISTOL, BURRILLVILLE, CENTRAL FALLS, CENTREDALE, CUMBERLAND, EAST PROVIDENCE, GLOCESTER, LINCOLN, MILLVILLE, NORTH PROVIDENCE, NORTH SMITHFIELD, PASCOAG, PAWTUCKET, PROVIDENCE (BROAD), PROVIDENCE (WASH), RIVERSIDE, SCITUATE, SEEKONK, SMITHFIELD, WARREN, WOONSOCKET | Massachusetts | Bristol, Bristol, Norfolk, Providence, Worcester |
| Verizon Wireless - Massachusetts | VZWEMA | Eastern Massachusetts and all of the municipalities within the counties of Worcester, Middlesex, Bristol, Norfolk, Essex, Suffolk, Barnstable, Plymouth, Nantucket, Dukes | Massachusetts | Bristol, Essex, Middlesex, Norfolk, Suffolk, Worcester |
| Verizon Wireless - Massachusetts | VZWWMA | Western Massachusetts and all of the municipalities within the counties of Hampden, Franklin, Hampshire, Berkshire | Massachusetts | Berkshire, Franklin, Hampden, Hampshire |
| Veroxity Technology Partners | VTPMA | Veroxity Technology Partners service area in Massachusetts | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Wakefield Fire Department | WKFLFD | Wakefield, MA | Massachusetts | Middlesex |
| Wakefield Municipal Light Plant | WAKELP | Town of Wakefield, MA | Massachusetts | Middlesex |
| Walpole Fire Alarm and Municipal Fiber | WALPLE | Walpole Fire | Massachusetts | Norfolk |
| Ware Fire Department | WAREFD | Ware, MA | Massachusetts | Hampshire |
| Warren Fire Department | WRRNFD | Warren, MA | Massachusetts | Worcester |
| Watertown Fire Department | WTRNFD | Watertown, MA | Massachusetts | Middlesex |
| Wayland Fire Department | WYLDFD | Wayland, MA | Massachusetts | Middlesex |
| Webster Fire Department | WBSRFD | Webster, MA | Massachusetts | Worcester |
| Wellesley Fire Department | WLSYFD | Wellesley, MA | Massachusetts | Norfolk |
| Wellesley Municipal Light Plant | WLLYLP | Wellesley, MA | Massachusetts | Norfolk |
| Wellfleet Fire Department | WLFTFD | Wellfleet, MA | Massachusetts | Barnstable |
| Wendell Municipal Light Plant | WNDMLP | Town of Wendell, Franklin County | Massachusetts | Franklin |
| Wenham Fire Department - Not Active | WNHMFD | Wenham, MA | Massachusetts | Essex |
| West Boylston Fire Department | WBYNFD | West Boylston, MA | Massachusetts | Worcester |
| West Boylston Municipal Light Plant | WBML | West Boylston Municipal Light Plant | Massachusetts | Worcester |
| West Bridgewater Fire Department | WBRGFD | West Bridgewater, MA | Massachusetts | Plymouth |
| West Brookfield Fire Department | WBRKFD | West Brookfield, MA | Massachusetts | Worcester |
| West Newbury Fire Department | WNBYFD | West Newbury, MA | Massachusetts | Essex |
| West Springfield Fire Department - Not Active | WSPGFD | West Springfield, MA | Massachusetts | Hampden |
| West Springfield Municipal Light Plant | WSFMLP | Town of West Springfield, Hampden County | Massachusetts | Hampden |
| West Stockbridge Fire Department | WSTKFD | West Stockbridge, MA | Massachusetts | Berkshire |
| West Tisbury Fire Department | WTBYFD | West Tisbury, MA | Massachusetts | Dukes |
| Westborough Fire Department | WBROFD | Westborough, MA | Massachusetts | Worcester |
| Westfield Fire Department | WSFLFD | Westfield, MA | Massachusetts | Hampden |
| Westfield Municipal Gas & Electric Light Department | WSTFGE | Westfield, MA | Massachusetts | Hampden |
| Westford Fire Department | WFRDFD | Westford, MA | Massachusetts | Middlesex |
| Weston Fire Department | WSTNFD | Weston, MA | Massachusetts | Middlesex |
| Westwood Fire Department | WSWDFD | Westwood, MA | Massachusetts | Norfolk |
| Weymouth Fire Department | WEYTFD | Town of Weymouth - Fire Department | Massachusetts | Norfolk |
| Whately Fire Department | WTLYFD | Whately, MA | Massachusetts | Franklin |
| Whip City Fiber | WHIPMA | Westfield, Hampden, Franklin, and Berkshire County | Massachusetts | Berkshire, Franklin, Hampden |
| Wi4ME LLC dba Aer Wireless | AERMA | Massachusetts | Massachusetts | Barnstable, Berkshire, Bristol, Dukes, Essex, Franklin, Hampden, Hampshire, Middlesex, Nantucket, Norfolk, Plymouth, Suffolk, Worcester |
| Wilbraham Fire Department | WBHMFD | Wilbraham, MA | Massachusetts | Hampden |
| Williamsburg Fire Department | WLBGFD | Williamsburg, MA | Massachusetts | Hampshire |
| Williamstown Fire Department | WLTWFD | Williamstown, MA | Massachusetts | Berkshire |
| Wilmington Fire Department | WMGNFD | Wilmington, MA | Massachusetts | Middlesex |
| Winchendon Fire Department | WNDNFD | Winchendon, MA | Massachusetts | Worcester |
| Winchester Fire Department | WCHSFD | Town of Winchester, Middlesex County | Massachusetts | Middlesex |
| Winthrop Fire Department | WTRPFD | Winthrop, MA | Massachusetts | Suffolk |
| WiredWest Communications Coop Corp | WRDWST | Rowe, New Salem, Washington, Windsor, Heath, Becket | Massachusetts | Berkshire, Franklin |
| Woburn Fire Department | WBRNFD | Woburn, MA | Massachusetts | Middlesex |
| Worcester Fire Department | WRSTFD | Worcester, MA | Massachusetts | Worcester |
| Worthington Fire Department | WRGNFD | Worthington, MA | Massachusetts | Hampshire |
| Wrentham Fire Department | WNTMFD | Wrentham, MA | Massachusetts | Norfolk |