| Adams Telecom | ADAMAD | Barry (Pike County), Bowen (Hancock County), Camp Point (Adams County)
Clayton (Adams County), Fowler (Adams County)
Griggsville (Pike County), Mount Sterling (Brown County), Perry (Pike County), Quincy (Adams County) | Illinois | Adams, Brown, Hancock, Pike |
| Adams Telecom | ADAMMC | McDonough County | Illinois | McDonough |
| Allpoint NetworX, Inc. | ALLPIL | Madison and Bond County, Illinois, USA | Illinois | Bond, Madison |
| Ameren Illinois | AIALT | Ameren Alton Operating Center - Counties served: Madison, Jersey | Illinois | Jersey, Madison |
| Ameren Illinois | AIANN | Anna OC - Union, Alexander, Pulaski, Johnson, Massac Counties | Illinois | Alexander, Johnson, Massac, Pulaski, Union |
| Ameren Illinois | AIBEA | Beardstown Operating Center: E. Adams Co. (incl. Clayton, Camp Point); Brown Co.; Cass Co.; SW Fulton Co. (incl. Astoria, Summum, Anderson Lake); N. Morgan Co. (incl. Meredosia, Literberry, Prentice); NE Pike Co. (incl. Chambersburg); W. Sangamon (incl. P | Illinois | Adams, Brown, Fulton, Morgan, Pike, Sangamon |
| Ameren Illinois | AIBEL | Ameren Belleville Operating Center - Counties Served: St. Clair, Monroe, Clinton, Madison | Illinois | Clinton, Madison, Monroe, St Clair |
| Ameren Illinois | AIBEN | Benton OC - Franklin, Jefferson, Hamilton Counties | Illinois | Franklin, Hamilton, Jefferson |
| Ameren Illinois | AIBLM | Bloomington Operating Center - Woodford, McLean, Tazewell, Livingston | Illinois | Livingston, McLean, Tazewell, Woodford |
| Ameren Illinois | AICAN | Canton Operating Center: Fulton Co. (except Avon, Fairview, Farmington, Table Grove, Vermont, Astoria, Summum, Anderson Lake, Ipava, Marietta, London Mills); SW Peoria Co. (incl. Glasford) | Illinois | Fulton, Peoria |
| Ameren Illinois | AICAR | Carthage Operating Center: NE Adams Co.(incl. Golden, LaPrairie); Hancock Co. (except Fountain Green, Stillwell, Tioga, La Harpe); SW McDonough Co. (incl. Colmar) | Illinois | Adams, Hancock, McDonough |
| Ameren Illinois | AICARB | Carbondale OC - Jackson, Union Counties | Illinois | Jackson, Union |
| Ameren Illinois | AICMP | Champaign Operating Center - Champaign, Piatt, Vermilion counties | Illinois | Champaign, Piatt, Vermilion |
| Ameren Illinois | AICNT | Ameren Centralia Operating Center - Counties Served: Marion, Clinton, Washington, Jefferson | Illinois | Clinton, Jefferson, Marion, Washington |
| Ameren Illinois | AIDAN | Danville Operating Center - Champaign, Edgar, Vermilion counties | Illinois | Champaign, Edgar, Vermilion |
| Ameren Illinois | AIDEC | Ameren Decatur Operating Center - Macon, DeWitt, Piatt, Moultrie, & Sangamon Counties | Illinois | De Witt, Macon, Moultrie, Piatt, Sangamon |
| Ameren Illinois | AIDV1 | Division 1 - Bureau, Henderson, Henry, Kendall, LaSalle, Knox, Lee, Livingston, Marshall, McLean, Mercer, Peoria, Putnam, Stark, Tazewell, Warren and Woodford Counties | Illinois | Bureau, Henderson, Henry, Kendall, Knox, La Salle, Lee, Livingston, Marshall, McLean, Mercer, Peoria, Putnam, Stark, Tazewell, Warren, Woodford |
| Ameren Illinois | AIEAS | Washington - East of River - Marshall, Mason, Putnam, Tazewell, Woodford Counties | Illinois | Marshall, Mason, Putnam, Tazewell, Woodford |
| Ameren Illinois | AIEFF | Ameren Effingham Operating Center - Clay, Cumberland, Effingham, Fayette, Jasper, Marion, Shelby counties | Illinois | Clay, Cumberland, Effingham, Fayette, Jasper, Marion, Shelby |
| Ameren Illinois | AIESL | Ameren East St Louis Operating Center - Counties Served: Madison, St. Clair | Illinois | Madison, St Clair |
| Ameren Illinois | AIGAL | Galesburg - Fulton, Hancock, Henderson, Henry, Knox, McDonough, Mercer, Stark, Warren, Whiteside Counties | Illinois | Fulton, Hancock, Henderson, Henry, Knox, McDonough, Mercer, Stark, Warren, Whiteside |
| Ameren Illinois | AIGIL | Gilman Operating Center-Ford, Iroquois, Kankakee, Livingston, McLean Counties | Illinois | Ford, Iroquois, Kankakee, Livingston, McLean |
| Ameren Illinois | AIHAR | Harrisburg OC - Saline, Williamson, Pope, Gallatin, Johnson, Hamilton, White Counties | Illinois | Gallatin, Hamilton, Johnson, Pope, Saline, White |
| Ameren Illinois | AIHLB | Ameren Hillsboro Operating Center - Counties Served: Bond, Montgomery, Christian, Fayette, Marion, Clinton | Illinois | Bond, Christian, Clinton, Fayette, Marion, Montgomery |
| Ameren Illinois | AIJAX | Jacksonville Operating Center: Cass Co.; North Greene Co. (incl. Hillview, Patterson, White Hall); most of Morgan Co. (incl. Jacksonville, Concord, Chapin, Meredosia, Literberry, Prentice, Lynnville, South Jacksonville, Murrayville, & Woodson); Sangamon Co. (Pleasant Plains only); Scott Co. | Illinois | Cass, Greene, Morgan, Sangamon, Scott |
| Ameren Illinois | AIJER | Jerseyville Operating Center; Calhoun Co.; South Greene Co. (incl. Eldred, Kane, Carrollton, Wrights, Greenfield, & Rockbridge); Jersey Co.;W. Macoupin Co. (incl. Chesterfield, Piasa, Shipman, Medora); Morgan Co. (incl. Murrayville & Woodson) | Illinois | Calhoun, Greene, Jersey, Macoupin, Morgan, Scott |
| Ameren Illinois | AILAS | LaSalle - Bureau, Kendall, LaSalle and Putnam Counties | Illinois | Bureau, Kendall, La Salle, Putnam |
| Ameren Illinois | AILCN | Ameren Lincoln Operating Center - Tazewell, Logan, DeWitt, McLean, Sangamon, Piatt, Wabash Counties | Illinois | De Witt, Logan, McLean, Piatt, Sangamon, Wabash |
| Ameren Illinois | AIMAC | Macomb Operating Center: SW. Fulton (incl. Vermont, Table Grove, Marietta, Ipava, Astoria, Summum, Anderson Lake); E. Hancock Co. (incl. Fountain Green); McDonough Co. (except Blandinsville, Sciota, Good Hope, Bushnell, Colmar; Schuyler Co.; Warren Co. (incl. Roseville & Youngstown) | Illinois | Fulton, Hancock, McDonough, Schuyler, Warren |
| Ameren Illinois | AIMAR | Marion OC - Williamson, Jackson, Johnson Counties | Illinois | Jackson, Johnson, Williamson |
| Ameren Illinois | AIMRY | Ameren Maryville Operating Center - Counties Served: Madison, St. Clair | Illinois | Madison, St Clair |
| Ameren Illinois | AIMTC | Ameren Mt. Clare Operating Center - Counties Served: Madison, Macoupin, Jersey, Bond, Montgomery | Illinois | Bond, Jersey, Macoupin, Madison, Montgomery |
| Ameren Illinois | AIMTT | Mattoon Operating Center- Coles, Clark, Cumberland, Douglas, Edgar, Moultrie, Shelby counties | Illinois | Clark, Coles, Cumberland, Douglas, Edgar, Moultrie, Shelby |
| Ameren Illinois | AIMTV | Ameren Mt. Vernon Operating Center - Counties Served: Jefferson, Washington, Marion, Saline, Gallatin, White | Illinois | Gallatin, Jefferson, Marion, Saline, Washington, White |
| Ameren Illinois | AINPA | North Pana Operating Center - Christian, Macon, Montgomery, Shelby counties | Illinois | Christian, Macon, Montgomery, Shelby |
| Ameren Illinois | AIOLN | Olney Operating Center - Clay, Edwards, Marion, Richland, Wabash, Wayne, White counties | Illinois | Clay, Edwards, Marion, Richland, Wabash, Wayne, White |
| Ameren Illinois | AIPAX | Paxton Operating Center - Champaign, Ford, Iroquois, Livingston, McLean, Vermilion counties | Illinois | Champaign, Ford, Iroquois, Livingston, McLean, Vermilion |
| Ameren Illinois | AIPET | Petersburg Operating Center: SE Fulton Co. (4 miles along Rte 78 north from Jct. 136/78); W. Logan Co., (incl. Middletown, New Holland); Mason Co., (except Manito, Allen, San Jose); Menard Co.; NW Sangamon Co. (incl. Cantrall, Andrew); SW Tazewell Co., (incl Spring Lake) | Illinois | Fulton, Logan, Mason, Menard, Sangamon, Tazewell |
| Ameren Illinois | AIPIT | Pittsfield Operating Center: E. Adams Co. (incl Clayton & Camp Point); Brown Co.; most of Pike Co. (except Hull, Kinderhook); Scott Co., (except Naples, Bluffs) | Illinois | Adams, Brown, Pike, Scott |
| Ameren Illinois | AIPPK | Pioneer Park - West of River - Bureau, Marshall (West side of River), Peoria, Putnam (West side of river) Knox, and Fulton Counties | Illinois | Bureau, Fulton, Knox, Marshall, Peoria, Putnam, Stark |
| Ameren Illinois | AIQUI | Quincy Operating Center: Adams Co. (except Clayton, Camp Point, Golden, La Prairie); SW Hancock Co. (incl. Stillwell, Tioga); NW Pike Co. (incl. Hull, Kinderhook) | Illinois | Adams, Hancock, Pike |
| Ameren Illinois | AIROB | Robinson Operating Center - Clark, Coles, Crawford, Edgar, Jasper, Lawrence counties | Illinois | Clark, Coles, Crawford, Edgar, Jasper, Lawrence |
| Ameren Illinois | AISPA | Ameren Sparta Operating Center - Counties Served: Perry, Washington, Jackson, Randolph, St. Clair, Monroe, Jefferson, Franklin | Illinois | Franklin, Jackson, Jefferson, Monroe, Randolph, St Clair, Washington |
| Ameren Illinois | AISPR | Ameren Springfield Operating Center - Sangamon, Logan, DeWitt and Christian Counties | Illinois | Christian, De Witt, Logan, Sangamon |
| Ameren Illinois | AITUS | Tuscola Operating Center- Champaign, Douglas, Edgar, Moultrie, Piatt, Vermilion counties | Illinois | Champaign, Douglas, Edgar, Piatt, Vermilion |
| Ameren Illinois | AIVIR | Virden Operating Center: N. Macoupin Co. (incl. Virden, Girard, Palmyra, Modesto, Scottville, Hettick); NW Montgomery Co. (incl. Farmersville, Waggoner); SE Morgan Co. (incl. Waverly, Franklin, Alexander); SW Sangamon Co. (incl. Pawnee, Glenarm, Divernon, | Illinois | Macoupin, Montgomery, Morgan, Sangamon |
| Ameren Illinois | ASRM | Safety and Resource Management - State of Illinois Administrative code. | Illinois | Adams, Alexander, Bond, Boone, Brown, Bureau, Calhoun, Carroll, Cass, Champaign, Christian, Clark, Clay, Clinton, Coles, Cook, Crawford, Cumberland, De Witt, DeKalb, Douglas, DuPage, Edgar, Edwards, Effingham, Fayette, Ford, Franklin, Fulton, Gallatin, Greene, Grundy, Hamilton, Hancock, Hardin, Henderson, Henry, Iroquois, Jackson, Jasper, Jefferson, Jersey, Jo Daviess, Johnson, Kane, Kankakee, Kendall, Knox, La Salle, Lake, Lawrence, Lee, Livingston, Logan, Macon, Macoupin, Madison, Marion, Marshall, Mason, Massac, McDonough, McHenry, McLean, Menard, Mercer, Monroe, Montgomery, Morgan, Moultrie, Ogle, Peoria, Perry, Piatt, Pike, Pope, Pulaski, Putnam, Randolph, Richland, Rock Island, Saline, Sangamon, Schuyler, Scott, Shelby, St Clair, Stark, Stephenson, Tazewell, Union, Vermilion, Wabash, Warren, Washington, Wayne, White, Whiteside, Will, Williamson, Winnebago, Woodford |
| Ameren NP Egyptian Telephone Company | AILEGT | Randolph Co. | Illinois | Randolph |
| Ameren NP Southeastern Illinois Electrric | AILSIE | Gallatin Co. | Illinois | Gallatin |
| Ameren NP Tri-County Electric | AILTRI | | Illinois | Washington |
| AT&T Illinois | ATCHDA | Champaign/Danville District - CARROLL CNTY (Georgetown) CHAMPAIGN CNTY (Champaign, Foosland, Glover, Mayview, Ogden, Savoy, St Joseph, Tolono & Urbana) FORD CNTY (Derby, Gibson City, Guthrie, Harpster, Proctor & Sibley) MCLEAN CNTY (Saybrook) VERMILLION CNTY (Belgium, Bunsenville, Catlin, Danville, Fairmount, Fitham, Grape Crk., Hegeler, Indianola, Jamaica, Muncie, Oakwood, Olivet, Ridge Farm, Sidell, Tilton & Westville) | Illinois | Carroll, Champaign, Ford, McLean, Vermilion |
| AT&T Illinois | ATDCTR | Decatur District - MACON CNTY (Bearsdale, Decatur, Forsyth, Harristown, Maroa, Oakley, Sangamon, Turpin, Warrensburg & Wyckles) SCHUYLER CNTY (Browning, Frederick & Pleasant View) | Illinois | Macon, Schuyler |
| AT&T Illinois | ATMOLN | Moline District - HENRY CNTY (Cleveland, Coal Valley, Colona & Orion) LEE CNTY (Dixon, Prarieville, & Van Petten) MCHENRY CNTY (Coyne Ctr.) MERCER CNTY (Eliza, Preemption, Reynolds & Sherrard) ROCK ISLAND CNTY (Andalusia, Carbon Cliff, Coal Valley, East Moline, Milan, Moline, Oak Grove, Rock Island, Silvis, Taylor Grove & Taylor Ridge) WHITE CNTY (Illinois Cty.) WHITESIDE CNTY (Como, Emerson, Penrose & Rock Falls) | Illinois | Henry, Lee, McHenry, Mercer, Rock Island, White, Whiteside |
| AT&T Illinois | ATMRVL | Maryville District - BOND CNTY (Beavercreek, Dudleyville, Greenville, Hookdale, Old Ripley, Smithboro & Sorento) JERSEY CNTY (Brighton, Chautauqua, Elsah, Grafton & Jerseyville) MACOUPIN CNTY (Pasa) MADISON CNTY (Alhambra, Alton, Bethalto, Carpenter, Cottage Hills, Dorsey, E. Alton, Edwardsville, Glen Carbon, Godfrey, Hartford, Marine, Maryville, Meadowbrook, Mitchell, Moro, Rosewood Hgts, Roxana, S. Roxana, St Jacob, Troy, Venice, Wanda, Wilson Hgts, Wood Rvr. & Worden) ST CLAIR CNTY (Collinsville, Caseyville, Hollywood Hgts, Smithton & St Park Place) | Illinois | Bond, Jersey, Macoupin, Madison, St Clair |
| AT&T Illinois | ATMTVN | Mt. Vernon District - ALEXANDER CNTY (Cache, Cairo, Diswood, Elco, Future City, Gale, Hodges Pk., Klondike, Mc Clure, Miller City, N. Cairo, Olive Branch, Paiterville, Roth, Sandusky, Tamms, Thebes, Unity & Urbandale) CLARK CNTY (Mill Creek) CLAY CNTY (Xenia), CLINTON CNTY (Aviston, Bartelso, Beckemeyer, Breese, Carlyle, Central City, Germantown, Huey, New Baden, Possey, St Rose & Trenton) COOK CNTY (Glen Ridge) FAYETTE CNTY (Hagarstown & Vandalia) HANCOCK CNTY (Harmony) JEFFERSON CNTY (Belle Rvr, Bluford, Bonnie, Central City, Dix, Mt Vernon, Opdyke, Texico & Waltonville) MARION CNTY (Alma, Carter, Centralia, Central City, Iuka, Junction City, Kell, Kimmundy, Odin, Salem, Sandoval, Walnut Hill & Wamac) PULASKI CNTY (Meridian Hgts., Mound City, Mounds, N. Mounds, Olmstead, S. Mounds, Spencer Hgts & Villa Rdg.) SCHUYLER CNTY (Bluff City) ST CLAIR CNTY (Fayville) UNION CNTY (Dongola & Jonesboro) wASHINGTON CNTY (Ashley & Nashville) WAYNE CNTY (Keenes & Wayne City) | Illinois | Alexander, Clark, Clay, Clinton, Cook, Fayette, Hancock, Jefferson, Marion, Pulaski, Schuyler, St Clair, Union, Washington, Wayne |
| AT&T Illinois | ATOFLN | O'Fallon District - MADISON CNTY (Granite City, Madison, Pontoon Bch) ST CLAIR CNTY (Alorton, Belleville, Brooklyn, Cahokia, Centerville, Dupo, E. St. Louis, Edgemont, Fairmont City, Fairview Hgts, Freeburg, Lebanon, Lenzburg, Mascoutah, Millstadt, New Athens, O'Fallon, Sauget, Scott AFB, Shiloh, Swansea & Washington Park) | Illinois | Madison, St Clair |
| AT&T Illinois | ATPEOR | Peoria District - FULTON CNTY (Banner, Breeds, Brereton, Bryant, Canton, Cuba, Duncan Mills, Dunfermline, Farmington, Fiatt, Ipava, Lewistown, Little America, Liverpool, Maple Mills, Middlegrove, Monterey, Norris, St David)LOGAN CNTY (San Jose) MASON CNTY (San Jose) PEORIA CNTY (Bartonville, Bellevue, Edwards, Hanna City, Kingston Mines, Mapleton, Mossville, Norwood, Peria, Peoria Hgts, Pioneer, Pottstown, Smithville, Trivoli & W. Peoria) TAZEWELL CNTY (Creve Coeur, Delavan, E. Peoria, Sunnyland & Washington) WOODFOED CNTY (Bayview Grdns, Germantown Hills, Metamora & Spring Bay) | Illinois | Fulton, Logan, Mason, Peoria, Tazewell, Woodford |
| AT&T Illinois | ATQNCY | Quincy District - ADAMS CNTY (Burton, Camp Point, Clayton, Columbus, Fall Creek, Fowler, Liberty, Marblehead, Mendon, Payson, Plainville & Quincy) PIKE CNTY (Barry & Hull) | Illinois | Adams, Pike |
| AT&T Illinois | ATSPFD | Springfield District – CASS CNTY (Ashland, Beardstown, Bluff Springs & Chandlerville) CHRISTIAN CNTY (Edinburg & Mt Auburn) MENARD CNTY (Athens, Atterberry, Greenview, Oakford, Petersburg & Tallula) SANGAMON CNTY (Andrew, Barclay, Beamington, Berry, Bradfordton, Buckhart, Buffalo, Cantrall, Chatham, Clearlakem Curran, Dawson, Grandview, Jerome, Lanesville, Leland Grv, Mechanicsburg, New berlin, New City, Pawnee, Pleasant Plains, Riddle Hill, Riverton, Rochester, Sherman, Southern View, Spaulding, Springfield & Williamsville) | Illinois | Cass, Christian, Sangamon |
| AT&T Illinois | ATTBLI | Blue Island District – IROQUOIS COUNTY (Crescent City, Gilman, Onarga, Watseka WC’s) LIVINGSON COUNTY (Forrest WC) | Illinois | Iroquois, Kankakee |
| AT&T Illinois | ATTJOL | Joliet District - LASALLE COUNTY ( Harding, LaSalle, Oglesby, Ottawa, Part of Seneca and Utica WC’s) KENDALL COUNTY ( Lisbon, Newark, Yorkville WC’s) | Illinois | Kendall, La Salle |
| Brightspeed Illinois | CENTIL | Formerly CenturyLink/Lumen
Knox, Warren and Fulton Counties,
Carroll and Jo Daviess County,
Marshall County, Tazewell County, Mason county,
Madison County | Illinois | Carroll, Fulton, Jo Daviess, Knox, Madison, Marshall, Mason, Tazewell, Warren |
| Cass Cable | CASCBL | Calhoun, Pike, Shuyler, Sangamon, Tazewell, Brown(hwy 107 east to hwy 97), Cass(hwy 125 north to hwy 136), Mason(hwy 136 south) and Menard(west of hwy 97) counties | Illinois | Brown, Calhoun, Cass, Mason, Menard, Pike, Sangamon, Schuyler, Tazewell |
| Charter Communications | CHRESL | East St Louis Area - Clinton, Jackson, Jefferson, Macoupin, Madison, Monroe, Richland, St Clair and Washington counties | Illinois | Clinton, Jackson, Jefferson, Macoupin, Madison, Monroe, Richland, St Clair, Washington |
| Charter Communications | CHRJEF | Clinton, Jefferson, Marion and Washington Counties | Illinois | Clinton, Jefferson, Marion, Washington |
| City of Highland | CTYHLD | The City of Highland electric department covers about 64 square miles in the southeast corner of Madison County, Illinois. | Illinois | Madison |
| City of Rock Falls | RCKFLS | City of Rock Falls, Coloma Township | Illinois | Whiteside |
| Clearwave Fiber LLC | CLRWVI | Jefferson, Washington, Clinton, St. Clair, Madison, Marion, Wayne, Clay | Illinois | Clay, Clinton, Jefferson, Madison, Marion, St Clair, Washington, Wayne |
| Comcast Illinois | COMADM | Adams County - City of Quincy | Illinois | Adams |
| Comcast Illinois | COMMAS | Massac County, McHenry Co - Fiber | Illinois | Massac, McHenry |
| Comcast Illinois | COMMER | Clinton, Dekalb, Effingham, Ford, Fulton, Iroquis, Kendall, Marshall, Morgan, Pike, Putnam, Sangamon, Schuyler, Williamson/Saline | Illinois | Clinton, DeKalb, Effingham, Ford, Fulton, Iroquois, Kendall, Marshall, Morgan, Pike, Putnam, Saline, Sangamon, Schuyler, Williamson |
| Comcast Illinois | INSDAN | Formerly Insight - Champaign, Douglas, Edgar, Vermillion | Illinois | Champaign, Douglas, Edgar, Vermilion |
| Comcast Illinois | INSIGF | Formerly Insight - Fulton County: Fulton County hwy 97 west to hwy 78 north of hwy 24; Wayne and Williamson Counties | Illinois | Fulton, Wayne, Williamson |
| Comcast Illinois | INSIGH | Formerly Insight - Hancock County: Hancock County hwy 9 north and east of hwy 94; | Illinois | Hancock |
| Comcast Illinois | INSIGK | Formerly Insight - Knox County | Illinois | Knox |
| Comcast Illinois | INSIGM | Formerly Insight - McDonough County: McDonough County hwy 67 east between hwy 136 and hwy 9 | Illinois | McDonough |
| Comcast Illinois | INSIGP | Peoria County; Creve Couer in Tazewell County and Norwood in Mercer County | Illinois | Mercer, Peoria, Tazewell |
| Comcast Illinois | INSIGS | Formerly Insight - Sangamon County | Illinois | Sangamon |
| Comcast Illinois | INSIGT | Tazewell County | Illinois | Tazewell |
| Comcast Illinois | INSIGW | Formerly Insight - Warren County | Illinois | Warren |
| Comcast Illinois | INSLOG | Formerly Insight - Greene and Logan Counties | Illinois | Greene, Logan |
| Comcast Illinois | INSMCL | McLean County | Illinois | McLean |
| Comcast Illinois | INSMCN | Formerly Insight - Macon County | Illinois | Macon |
| Comcast Illinois | INSNOR | Formerly Insight - Boundaries for Illinois NW of Utica, SE of Freeport, NE of Kewanee, NE of Belvidere/Poplar Grove; Counties: Boone, Bureau, Henry, La Salle, Lee, McDonough, Ogle, Stephenson, Whiteside and Winnebago | Illinois | Boone, Bureau, Henry, La Salle, Lee, McDonough, Ogle, Stephenson, Whiteside, Winnebago |
| Comcast Illinois | INSSPR | Formerly Insight - Huey in Clinton County; Springfield in Sangamon County; Humrick in Vermillion County; Enfield in White County | Illinois | Clinton, Sangamon, Vermilion, White |
| Consolidated Communications | CCCILL | Central Illinois: Clark, Coles, Crawford, Cumberland, Douglas, Edgar, Fayette, Jasper, Macon, Macoupin, Sangamon, Champaign, Christian, Effingham, Moultrie, Shelby, Piatt, Montgomery, Clay, Richland, Lawrence, Madison | Illinois | Champaign, Christian, Clark, Clay, Coles, Crawford, Cumberland, Douglas, Edgar, Effingham, Fayette, Jasper, Lawrence, Macon, Macoupin, Madison, Montgomery, Moultrie, Piatt, Richland, Sangamon, Shelby |
| Crown Castle | CRWNIL | Cook County, Iroquois County, DeKalb County | Illinois | Cook, DeKalb, Iroquois |
| Darling Ingredients, Inc. | DRLING | St. Clair | Illinois | St Clair |
| Everstream GLC Holding Comapny LLC | EVRSTI | All counties in IL | Illinois | Adams, Alexander, Bond, Boone, Brown, Bureau, Calhoun, Carroll, Cass, Champaign, Christian, Clark, Clay, Clinton, Coles, Cook, Crawford, Cumberland, De Witt, DeKalb, Douglas, DuPage, Edgar, Edwards, Effingham, Fayette, Ford, Franklin, Fulton, Gallatin, Greene, Grundy, Hamilton, Hancock, Hardin, Henderson, Henry, Iroquois, Jackson, Jasper, Jefferson, Jersey, Jo Daviess, Johnson, Kane, Kankakee, Kendall, Knox, La Salle, Lake, Lawrence, Lee, Livingston, Logan, Macon, Macoupin, Madison, Marion, Marshall, Mason, Massac, McDonough, McHenry, McLean, Menard, Mercer, Monroe, Montgomery, Morgan, Moultrie, Ogle, Peoria, Perry, Piatt, Pike, Pope, Pulaski, Putnam, Randolph, Richland, Rock Island, Saline, Sangamon, Schuyler, Scott, Shelby, St Clair, Stark, Stephenson, Tazewell, Union, Vermilion, Wabash, Warren, Washington, Wayne, White, Whiteside, Will, Williamson, Winnebago, Woodford |
| Extenet Systems | XNETCH | Chicago Area - Kane, Dupage, Cook & Lake | Illinois | Cook, DuPage, Kane, Lake |
| Extenet Systems | XNETIL | Jackson, Williamson, Saline, Franklin, Perry, Washington, Madison, St.Clair | Illinois | Franklin, Jackson, Madison, Perry, Saline, St Clair, Washington, Williamson |
| Frontier Communications | FCBLTN | BLOOMINGTON CONSTRUCTION AREAS: MCLEAN CO. (incl. Arrowsmith, Bellflower, Bloomington, Carlock, Colfax, Cooksville, Cropsey, Danvers, Downs, Ellsworth, Heyworth, Hoopeston, Hudson, Le Roy, Lexington, McLean, Normal, Saybrook, Stanford & Towanda) TAZEWELL CO. (incl. Deer Creek, Goodfield, Groveland, Mackinaw, Morton, Sunnyland, Tremont & Washington) WOODFORD CO. (incl. Congerville, Deer Creek, Eureka & Secor) | Illinois | McLean, Tazewell, Woodford |
| Frontier Communications | FCBLVD | BELVIDERE CONSTRUCTION AREAS: BOONE CO. (incl. Belvidere, Capron, Cherry Valley, Garden Prairie & Poplar Grove) DEKALB CO. (incl. Genoa & Kirkland) JO DAVIESS CO. (incl. Stockton) MCHENRY CO. (incl. Hebron, Richmond, Spring Grove & Wonder Lake) OGLE CO. (incl. Byron, Monroe Center & Stillman Valley) WINNEBAGO CO. (incl. Cherry Valley, Durand, New Milford, Pecatonica, Rockcut, Rockton, Roscoe, Seward, Shirland & Winnebago). | Illinois | Boone, DeKalb, Jo Daviess, McHenry, Ogle, Winnebago |
| Frontier Communications | FCDKLB | DEKALB CONSTRUCTION AREAS: DEKALB CO. (incl. Dekalb, Hinckley, Malta, Maple Park, Sandwich, Shabbona, Sycamore, Somonauk & Waterman) KANE CO. (incl. Maple Park) KENDALL CO. (incl. Sandwich) LA SALLE CO. (incl. Earlville, Leland & Sheridan) LEE CO. (incl. Amboy, Ashton, Franklin Grove, Paw Paw, Steward & Sublette) OGLE CO. (incl. Creston, Oregon & Rochelle) | Illinois | DeKalb, Kane, Kendall, La Salle, Lee, Ogle |
| Frontier Communications | FCEFFM | EFFINGHAM CONSTRUCTION AREAS: BOND CO. (incl. Mulberry Grove) EFFINGHAM CO. (incl. Altamont, Edgewood, Shumway, Teutopolis & Watson) FAYETTE CO. (incl. Brownstown, Farina, Ramsey, Sefton, St. Elmo & St. Peter) MONTGOMERY CO. (incl. Coffeen, Donnellson & Fillmore) SHELBY CO. (incl. Herrick & Oconee) WILL CO. (incl. Beecher City). | Illinois | Bond, Effingham, Fayette, Montgomery, Shelby, Will |
| Frontier Communications | FCFRPT | FREEPORT CONSTRUCTION AREAS: CARROLL CO. (incl. Chadwick, Lanark, Milledgeville & Shannon) JO DAVIESS CO. (incl. Apple Canyone Lake, Apple River, East Dubuque, Elizabeth, Hanover, Massbach, N. Apple River, WI, N. Warren, WI, Scales Mound & Warren) OGLE CO. (incl. Forreston, Mt. Morris & Polo) STEPHENSON CO. (incl. Cedarville, Dakota, Davis, Freeport, German Valley, Lena, McConnell, Orangeville, Pearl City & Winslow) WHITESIDE CO. (incl. Coleta, Fulton & Morrison) | Illinois | Carroll, Jo Daviess, Ogle, Stephenson, Whiteside |
| Frontier Communications | FCHYTN | HOYLETON CONSTRUCTION AREAS: BOND CO. (incl. Keyesport, Pocahontas & Sorento) CLINTON CO. (incl. Bartelso, Hoffman & Shattuc) JEFFERSON CO. (incl. Ina, Waltonville & Woodlawn) MARION CO. (incl. Sandoval) PERRY CO. (incl. Tamaroa) WASHINGTON CO. (incl. Addieville, Ashley, Du Bois, Hoyleton, Irvington & New Minden) WILLIAMSON CO. (incl. Pittsburg) | Illinois | Bond, Clinton, Jefferson, Marion, Perry, Washington, Williamson |
| Frontier Communications | FCJCVL | JACKSONVILLE CONSTRUCTION AREAS: CASS CO. (incl. Arenzville) GREENE CO. (incl. Carrollton, Greenfield, Patterson, Roodhouse & White Hall) MACOUPIN CO. (incl. Girard, Modesto, Palmyra, Scottville & Virden) MORGAN CO. (incl. Alexander, Chapin, Concord, Franklin, Jacksonville, Literberry, Murrayville, Waverly & Woodson) PIATT CO. SANGAMON CO. (incl. Auburn, Chatham, Divernon, Loami, New Berlin, Pawnee, Pleasant Plains & Virden) SCOTT CO. (incl. Bluffs, Manchester & Winchester) UNION CO. (incl. Alexander) | Illinois | Cass, Greene, Macoupin, Morgan, Piatt, Sangamon, Scott, Union |
| Frontier Communications | FCJSYL | JERSEYVILLE CONSTRUCTION AREAS: CALHOUN CO. (incl. Batchtown, Brussels, Hamburg, Hardin & Kampsville) JERSEY CO. (incl. Dow, Fieldon & Jerseyville) MACOUPIN CO. (incl. Benld, Bunker Hill, Carlinville, Chesterfield, Dorchester, Gillespie, Hettick, Medora, Mount Olive, Shipman & Woodburn) MADISON CO. (incl. New Douglas) | Illinois | Calhoun, Jersey, Macoupin, Madison |
| Frontier Communications | FCKEWN | KEWANEE CONSTRUCTION AREAS: BUREAU CO. (incl. Buda, Bradford, Bureau, De Pue, Dover, La Moille, Manlius, Mineral, Neponset, Princeton, Sheffield, Thomas, Tiskilwa, Walnut & Wyanet) HENRY CO. (incl. Galva, Hooppole & Kewanee). MARSHALL CO. (incl. Camp Grove) PEORIA CO. (incl. Brimfield, Dunlap, Edelstein, Elwood & Princeville) ROCK ISLAND CO. (incl. Cordova, Hampton, Hillsdale & Port Byron) STARK CO. (incl. Bradford, Camp Grove, Castleton, Elmira, Toulon & Wyoming) WHITESIDE CO. (incl. Albany, Erie, Lyndon, Prophetstown & Tampico) | Illinois | Bureau, Henry, Marshall, Peoria, Rock Island, Stark, Whiteside |
| Frontier Communications | FCLNCL | LINCOLN CONSTRUCTION AREAS: DE WITT CO. (incl. Clinton, Kenney & Waynesville) LOGAN CO. (incl. Atlanta, Elkhart, Emden, Latham, Lawndale, Lincoln, Middletown, Mount Pulaski & New Holland) MACON CO. (incl. Maroa, Niantic & Warrensburg) SANGAMON CO. (incl. Illiopolis, Sherman & Williamsville) TAZEWELL CO. (incl. Hopedale & Minier) WAYNE CO. | Illinois | De Witt, Logan, Macon, Sangamon, Tazewell, Wayne |
| Frontier Communications | FCMARN | MARION CONSTRUCTION AREAS: FRANKLIN CO. (incl. Benton, Christopher, Ewing, Royalton, Sesser, Thompsonville, West Frankfort & Zeigler) GALLATIN CO (incl. New Haven, Omaha & Ridgway) JACKSON CO. (incl. Carbondale, De Soto, Elkville, Grand Tower & Murphysboro) PERRY CO. (incl. Du Quoin) SALINE CO. (incl. Eldorado, Galatia, Raleigh & Stonefort) WHITESIDE CO. (incl. Norris City) WILLIAMSON CO. (incl. Carterville, Creal Springs, Herrin, Hurst, Johnston city, Marion, Paulton & Stonefort) | Illinois | Franklin, Gallatin, Jackson, Perry, Saline, Williamson |
| Frontier Communications | FCMCMB | MACOMB CONSTRUCTION AREAS: FORD CO. (incl. Niota) FULTON CO. (incl. Astoria, Cuba & Vermont) HANCOCK CO. (incl. Basco, Bowen, Carthage, Dallas City, Elvaston, Ferris, Hamilton, Nauvoo, Sutter & Warsaw) HENDERSON CO. (incl. Dallas City) MASON CO. (incl. Bath, Kilbourne & Mason City) MCDONOUGH CO. (incl. Bushnell, Coulterville, Macomb & Prairie City) MENARD CO. (incl. Greenview) SCHUYLER CO. (incl. Rushville) | Illinois | Ford, Fulton, Hancock, Henderson, Mason, McDonough, Menard, Schuyler |
| Frontier Communications | FCMETR | METROPOLIS CONSTRUCTION AREAS: GALLATIN CO. (incl. Shawneetown) JOHNSON CO. (incl. Cypress, Goreville & Vienna) MASSAC CO. (incl. Brookport, Joppa & Metropolis) POPE CO. (incl. Golconda) PULASKI CO. (incl. Karnak, Ullin & Villa Ridge) SALINE CO. (incl. Carrier Mills & Harrisburg) UNION CO. (incl. Anna, Cobden & Dongola) | Illinois | Gallatin, Johnson, Massac, Pope, Pulaski, Saline, Union |
| Frontier Communications | FCMNTH | MONMOUTH CONSTRUCTION AREAS: FULTON CO. (incl. London Mills) HENDERSON CO. (incl. Biggsville, Gulfport, Oquawka & Stronghurst) HENRY CO. (incl. Alpha, Andover & Orion) KNOX CO. (incl. Abingdon, London Mills & Rio) MERCER CO. (incl. Aledo, Alexis, Eliza, Joy, Keithsburg, Matherville, New Boston, North Henderson, Preemption, Seaton & Sherrard) WARREN CO. (incl. Alexis, Kirkwood, Little York, Monmouth & Roseville) | Illinois | Fulton, Henderson, Henry, Knox, Mercer, Warren |
| Frontier Communications | FCMSCT | MASCOUTAH CONSTRUCTION AREAS: CLINTON CO. (incl. Albers & New Baden) JACKSON CO. (incl. Ava) MADISON CO. (incl. Highland) MONROE CO. (incl. Hecker) PERRY CO. (incl. Pinckneyville & Tamaroa) RANDOLPH CO. (incl. Chester, Coulterville, Ellis Grove, Evansville, Percy, Sparta, Steeleville & Tilden) ST. CLAIR CO. (incl. Fayetteville, Marissa, Mascoutah, Millstadt, Summerfield & Westview) WASHINGTON CO. (incl. Okawville) | Illinois | Clinton, Jackson, Madison, Monroe, Perry, Randolph, St Clair, Washington |
| Frontier Communications | FCMTZN | MT ZION CONSTRUCTION AREAS: CHAMPAIGN CO. (incl. Mahomet) DEWITT CO. (incl. Farmer City & Weldon) LOGAN CO. (incl. Beason, Chestnut & Hartsburg) MACON CO. (incl. Argenta, Dalton City, Elwin, Macon, Mount Zion & Oreana) MOULTRIE CO. (incl. Bethany, Dalton City, Kirksville & Sullivan) PIATT CO. (incl. Bement, Cerro Gordo, Cisco, Deland, Hammond, La Place, Mansfield & Monticello) SHELBY CO. (incl. Findlay & Moweaqua) | Illinois | Champaign, De Witt, Logan, Macon, Moultrie, Piatt, Shelby |
| Frontier Communications | FCOLNY | OLNEY CONSTRUCTION AREAS: CLAY CO. (incl. Clay City, Flora, Sailor Springs & Wendelin) CRAWFORD CO. (incl. Palestine) EDWARDS CO. (incl. Albion, Grayville & West Salem) HAMILTON CO. (incl. McLeansboro). IROQUOIS CO. (incl. Bellmont) JASPER CO. (incl. Willow Hill) LAWRENCE CO. (incl. Birds, Bridgeport, Chauncey, Lawrenceville, St. Francisville, Sumner & Westport) RICHLAND CO. (incl. Calhoun, Claremont, Dundas, Noble, Olney & Parkersburg) WABASH CO. (incl. Allendale & Mount Caramel). WAYNE CO. (incl. Fairfield & Wayne City) WHITE CO. (Burnt Prairie, Carmi, Enfield & Grayville) WHITESIDE CO. (incl. Maunie) | Illinois | Clay, Crawford, Edwards, Hamilton, Iroquois, Jasper, Lawrence, Richland, Wabash, Wayne, White, Whiteside |
| Frontier Communications | FCPARS | PARIS CONSTRUCTION AREAS: CHAMPAIGN CO. (incl. Broadlands, Homer & Sidney) CLARK CO. (incl. Casey, Marshall, West Union & Westfield) CRAWFORD CO. (incl. Annapolis, Hardinville, Hutsonville & Robinson) CUMBERLAND CO. (incl. Casey, Greenup, Neoga & Toledo) DOUGLAS CO. (incl. Newman, Tuscola & Villa Grove) EDGAR CO. (incl. Brocton, Chrisman, Kansas, Metcalf, Paris, Redmon & Vermilion) JASPER CO. (incl. Newton & Rose Hill) VERMILION CO. (incl. Sidell) | Illinois | Champaign, Clark, Crawford, Cumberland, Douglas, Edgar, Jasper, Vermilion |
| Frontier Communications | FCPNTC | PONTIAC CONSTRUCTION AREAS: FORD CO. (incl. Cabery, Elliott, Kempton, Melvin, Paxton, Piper City, Roberts & Sibley) IROQUOIS CO. (incl. Ashkum, Beaverville, Buckley, Chebanse, Clifton, Danforth, Donovan, Loda, Martinton, Sheldon & Thawville) KANKAKEE CO. (incl. Cabery, Elliott & Reddick) LIVINGSTON CO. (incl. Campus, Chatsworth, Cullom, Emington, Fairbury, Odell, Pontiac, Saunemin & Strawn) MCLEAN CO. (incl. Chenoa) | Illinois | Ford, Iroquois, Kankakee, Livingston, McLean |
| Frontier Communications | FCPTFD | PITTSFIELD CONSTRUCTION AREAS: ADAMS CO. (incl. Camp Point & Clayton) BROWN CO. (incl. Mount Sterling & Versailles) GREENE CO. (incl. Eldred & Hillview) MORGAN CO. (incl. Meredosia) PIKE CO. (incl. Barry, Baylis, Griggsville, Hull, Milton, New Canton, Pearl, Perry, Pittsfield, Pleasant Hill & Rockport) | Illinois | Adams, Brown, Greene, Morgan, Pike |
| Frontier Communications | FCRNTL | RANTOUL CONSTRUCTION AREAS: CHAMPAIGN CO. (incl. Bondville, Fisher, Flatville, Foosland, Gifford, Ivesdale, Ludlow, Ogden, Penfield, Pesotum, Philo, Rantoul, Royal, Sadorus, Seymour, Thomasboro & Tolono) IROQUOIS CO. (incl. Cissna Park, Milford, Stockland, Wellington & Woodland) VERMILION CO. (incl. Alvin, Armstrong, Bismarck, Cheneyville, Collison, East Lynn, Henning, Hoopeston, Potomac, Rankin & Rossville) | Illinois | Champaign, Iroquois, Vermilion |
| Frontier Communications | FCSTRT | STREATOR CONSTRUCTION AREAS: BUREAU CO. (incl. Dalzell, Ladd, Ohio & Spring Valley) LASALLE CO. (incl. Cedar Point, Grand Ridge, Lostant, Mendota, Rutland, Streator & Wenona) LEE CO. (incl. Compton & West Brooklyn) LIVINGSTON CO. (incl. Flanagan, Graymont, Long Point & Streator) MARSHALL CO. (incl. Henry, La Rose, Sparland, Toluca, Varna, Washburn & Wenona) PEORIA CO. (incl. Chillicothe & Mossville) PUTNAM CO. (incl. Granville, Hennepin, Magnolia & Putnam) WOODFORD CO. (incl. Benson, Lowpoint, Minonk, Roanoke & Washburn) | Illinois | Bureau, La Salle, Lee, Livingston, Marshall, Peoria, Putnam, Woodford |
| Grafton Technologies Inc. | GRAFTN | Jersey county and the City of Jerseyville Illinois | Illinois | Jersey |
| Harrisonville Telephone Company | HTCIL | Monroe, Randolph, St. Clair Counties | Illinois | Monroe, Randolph, St Clair |
| Highland Communication Services | HLDCSV | Highland, IL/Madison County | Illinois | Madison |
| i3 Broadband, LLC | I3BBIL | Madison County | Illinois | Madison |
| ILLINOIS ELECTRIC COOPERATIVE | ILELCO | GREENE, MORGAN, SCOTT, PIKE, CALHOUN, CASS, ADAMS, BROWN, MACOUPIN, JERSEY | Illinois | Adams, Brown, Calhoun, Cass, Greene, Jersey, Macoupin, Morgan, Pike, Scott |
| Madison Communications Company | MADCOM | Northeastern Madison County & Southern Macoupin County | Illinois | Macoupin, Madison |
| MCC Network Services | MCCIL | Vermilion County | Illinois | Vermilion |
| MCI Metro Access Transmission Services Corp | MCIMAT | La Salle, Madison, St Clair Counties | Illinois | La Salle, Madison, St Clair |
| Mediacom Communications | MDCHIL | Hancock Cnty- Hamilton and Warsaw, IL. | Illinois | Hancock |
| Mediacom Communications | MDCMIL | All of Mediacom service area in Illinois - Hancock Cnty- Hamilton and Warsaw, IL. use MDCHIL | Illinois | Adams, Alexander, Bond, Boone, Brown, Bureau, Calhoun, Carroll, Cass, Champaign, Christian, Clark, Clay, Clinton, Coles, Cook, Crawford, Cumberland, De Witt, DeKalb, Douglas, DuPage, Edgar, Edwards, Effingham, Fayette, Ford, Franklin, Fulton, Gallatin, Greene, Grundy, Hamilton, Hancock, Hardin, Henderson, Henry, Iroquois, Jackson, Jasper, Jefferson, Jersey, Jo Daviess, Johnson, Kane, Kankakee, Kendall, Knox, La Salle, Lake, Lawrence, Lee, Livingston, Logan, Macon, Macoupin, Madison, Marion, Marshall, Mason, Massac, McDonough, McHenry, McLean, Menard, Mercer, Monroe, Montgomery, Morgan, Moultrie, Ogle, Peoria, Perry, Piatt, Pike, Pope, Pulaski, Putnam, Randolph, Richland, Rock Island, Sangamon, Schuyler, Scott, Shelby, St Clair, Stark, Stephenson, Tazewell, Union, Vermilion, Wabash, Warren, Washington, Wayne, White, Whiteside, Will, Williamson, Winnebago, Woodford |
| Mediacom Communications | MEDNOR | Rock Island, Mercer, Henry, Knox, Stark, Marshall, Putnam, Bureau, Peoria, Whitside | Illinois | Bureau, Henry, Knox, La Salle, Marshall, Mercer, Peoria, Putnam, Rock Island, Stark, Stephenson, Whiteside, Winnebago |
| Mediacom Communications | MEDSOU | | Illinois | Saline |
| Metro Fibernet, LLC | MTRFNT | Bloomington/Normal IL Metropolitan Areas, Mclean County IL | Illinois | McLean |
| Mobilitie, LLC | MBLTIL | All of Illinois | Illinois | Adams, Alexander, Bond, Boone, Brown, Bureau, Calhoun, Carroll, Cass, Champaign, Christian, Clark, Clay, Clinton, Coles, Cook, Crawford, Cumberland, De Witt, DeKalb, Douglas, DuPage, Edgar, Edwards, Effingham, Fayette, Ford, Franklin, Fulton, Gallatin, Greene, Grundy, Hamilton, Hancock, Hardin, Henderson, Henry, Iroquois, Jackson, Jasper, Jefferson, Jersey, Jo Daviess, Johnson, Kane, Kankakee, Kendall, Knox, La Salle, Lake, Lawrence, Lee, Livingston, Logan, Macon, Macoupin, Madison, Marion, Marshall, Mason, Massac, McDonough, McHenry, McLean, Menard, Mercer, Monroe, Montgomery, Morgan, Moultrie, Ogle, Peoria, Perry, Piatt, Pike, Pope, Pulaski, Putnam, Randolph, Richland, Rock Island, Saline, Sangamon, Schuyler, Scott, Shelby, St Clair, Stark, Stephenson, Tazewell, Union, Vermilion, Wabash, Warren, Washington, Wayne, White, Whiteside, Will, Williamson, Winnebago, Woodford |
| Mt Carmel Public Utility Co. | MTCRML | Coverage Area: Illinois Counties – Wabash, Edwards, Lawrence | Illinois | Edwards, Lawrence, Wabash |
| NewWave Communications | AVEBC | Sparklight
Edwards - Albion & Grayville; Hamilton - Mcleansboro; Jasper - Newton; Lawrence - Bridgeport, Lawrenceville, St Francisville & Sumner; Richland - Olney; Wabash - Mt Carmel; Wayne - Fairfield & Wayne City; White - Carmi, Crossville, Enfield, Grayville & Norris City Fiber Trans. Cables - Carmi to Mcleansboro on SR-14; Enfield to Norris City on US-45 & SR-14; Grayville to Crossville onSR-1; Crossville to Carmi on CR-1950 E, S on CR-1600 E to SR-1; Crossville to New Harmony, IN on SR-14; Albion to Grayville on SR-130 to SR-1; Albion to Fairfield on SR-15; Fairfield to Wayne City on SR-15; Mt Carmel to Albion cabinet location, S on CR-1020 to CR-1190, N to CR-910 to N 1050 Blvd; North at 850, E to 1120 N, W to 700 E, S to 1100, N to 1070 N, along 1000 N , on 850 N to 800 E to 700E; Vincennes Indians to Lawrenceville on SR-33 to CR-990 N (old SR-50); Lawrenceville to Bridgeport on SR-250; Bridgeport to Olney on Highway 50 and Olney to Newton on SR-130 | Illinois | Edwards, Hamilton, Jasper, Lawrence, Richland, Vermilion, Wabash, Wayne, White |
| NewWave Communications | CHRILC | Edgar, Iroquois, Lawrence, Vermilion counties | Illinois | Edgar, Iroquois, Lawrence, Vermilion |
| NewWave Communications | NWAVEC | BOND – Greenville; CHRISTIAN - Assumption, Hewittville, Langlyville, Owaneco, Pana, Stonington, Taylorville; FAYETTE - Brownstown, Ramsey, Vandalia & Vera; MACON - West side Dalton City, Macon, Blue Mound, Oreana, Argenta; GREENE- Carrolton, Whitehall, Roodhouse ; JERSEY- Jerseyville, Brighton; MACOUPIN - Carlinville, E Gillispe, Gillispe, Girard, Nilwood, Sunset Lake & Virden; MONTGOMERY – Coalton, Farmersville, Hillsboro, Litchfield, Nokomis, Raymond, Schram City, Taylor Spring & Witt; MOULTRIE - East side Dalton City & Bethany; SANGOMAN – Auburn & Thayer; SCHUYLER - Bluff City; SCOTT- Manchester; SHELBY - Moweaqua, Shelbyville | Illinois | Bond, Christian, Fayette, Greene, Jersey, Macon, Macoupin, Montgomery, Moultrie, Sangamon, Schuyler, Scott, Shelby |
| NewWave Communications | NWAVES | ALEXANDER - Cairo & Tamms; FRANKLIN - Benton, Buckner, Christopher, Coello, Ewing, Mulketown, North City, Sesser, Steele City, Valier, West City & Whittington; PERRY - Du Quoin, Old Du Quoin, Pinckneyville, Saint Johns, Sunfield & Tamaroa; RANDOLPH - Breman, Chester, Evansville, Percy, Prairie du Rocher, Rumma, Sparta & Steeleville; ST. CLAIR - Belleville, Lenzburg, Marissa & New Athens; UNION - Anna & Jonesboro | Illinois | Alexander, Franklin, Perry, Randolph, St Clair, Union |
| Nova Cablevision, Inc. | NOVAIL | Warren Co. (Cameron, Little York, Kirkwood, Lake Warren-Monmouth, IL); Peoria Co. (Trivoli); Fulton Co. (Astoria, Lake WeeMaTuk, Vermont, Ipava); Henderson Co. (Gladstone, Carman); Mercer Co. (Keithsburg, New Boston, Joy); Knox Co. (North Henderson, Lake Braken, Gerlaw) | Illinois | Fulton, Henderson, Knox, Mercer, Peoria, Warren |
| Paetec Services (Windstream Illinios) | MCLDIL | All of Illinois | Illinois | Adams, Alexander, Bond, Boone, Brown, Bureau, Calhoun, Carroll, Cass, Champaign, Christian, Clark, Clay, Clinton, Coles, Cook, Crawford, Cumberland, De Witt, DeKalb, Douglas, DuPage, Edgar, Edwards, Effingham, Fayette, Ford, Franklin, Fulton, Gallatin, Greene, Grundy, Hamilton, Hancock, Hardin, Henderson, Henry, Iroquois, Jackson, Jasper, Jefferson, Jersey, Jo Daviess, Johnson, Kane, Kankakee, Kendall, Knox, La Salle, Lake, Lawrence, Lee, Livingston, Logan, Macon, Macoupin, Madison, Marion, Marshall, Mason, Massac, McDonough, McHenry, McLean, Menard, Mercer, Monroe, Montgomery, Morgan, Moultrie, Ogle, Peoria, Perry, Piatt, Pike, Pope, Pulaski, Putnam, Randolph, Richland, Rock Island, Sangamon, Schuyler, Scott, Shelby, St Clair, Stephenson, Tazewell, Union, Vermilion, Wabash, Warren, Washington, Wayne, White, Whiteside, Will, Williamson, Winnebago, Woodford |
| Quad State Internet (IL) | QUADIL | Massac County (IL) | Illinois | Massac |
| Rise Broadband | RSEMCN | Skybeam, LLC a Colorado Limited Liability Company d/b/a Rise Broadband | Illinois | Macon |
| SQF, LLC | SQFIL | All counties | Illinois | Adams, Alexander, Bond, Boone, Brown, Bureau, Calhoun, Carroll, Cass, Champaign, Christian, Clark, Clay, Clinton, Coles, Cook, Crawford, Cumberland, De Witt, DeKalb, Douglas, DuPage, Edgar, Edwards, Effingham, Fayette, Ford, Franklin, Fulton, Gallatin, Greene, Grundy, Hamilton, Hancock, Hardin, Henderson, Henry, Iroquois, Jackson, Jasper, Jefferson, Jersey, Jo Daviess, Johnson, Kane, Kankakee, Kendall, Knox, La Salle, Lake, Lawrence, Lee, Livingston, Logan, Macon, Macoupin, Madison, Marion, Marshall, Mason, Massac, McDonough, McHenry, McLean, Menard, Mercer, Monroe, Montgomery, Morgan, Moultrie, Ogle, Peoria, Perry, Piatt, Pike, Pope, Pulaski, Putnam, Randolph, Richland, Rock Island, Saline, Sangamon, Schuyler, Scott, Shelby, St Clair, Stark, Stephenson, Tazewell, Union, Vermilion, Wabash, Warren, Washington, Wayne, White, Whiteside, Will, Williamson, Winnebago, Woodford |
| Surf Broadband Solutions | SURFBS | Whiteside County, Will County, LaSalle County, DuPage County, and Kane County. | Illinois | DuPage, Kane, La Salle, Whiteside, Will |
| Tel-Star Cablevision | TELSTR | Peoria, Tazewell, and Woodford counties | Illinois | Peoria, Tazewell, Woodford |
| Teleport Communications America, LLC | TCAMIL | McLean County | Illinois | McLean |
| Time Warner Cable (Charter Communications) | TWCOWE | Gallatin and Hardin Counties - Shawneetown, Equality, Old Shawneetown, Junction, Ridgeway and Cave | Illinois | Gallatin, Hardin |
| Unite Private Networks | UPNIL | Winnebago County: Rockford, Love’s Park, Cherry Valley, South Beloit
Stephenson County: Freeport
Kankakee County: Bourbunais
Fulton County: Canton
Knox County: Galesburg | Illinois | Cook, DuPage, Fulton, Kankakee, Knox, Lake, Stephenson, Winnebago |
| Uniti Fiber | PEGIL | Peoria, Tazewell, Knox, McDonough
Formerly PEG Bandwidth | Illinois | Fulton, Knox, McDonough, Peoria, Tazewell, Warren |
| US Signal | USSLIL | Stephenson, Knox, Tazewell, Mason, Sangamon and DeWitt Counties | Illinois | De Witt, Knox, Mason, Sangamon, Stephenson, Tazewell |
| Vero Fiber Networks (IL) | VEROIL | Illinois(IL) Counties: Coles, Franklin, Morgan, St. Clair, Wabash | Illinois | Coles, Franklin, Morgan, St Clair, Wabash |
| WANRack, LLC | WANRCK | Alton, IL / Madison County, IL / Village of Godfrey | Illinois | Madison |
| Windstream Illinois KDL | KDLIL | Alexander, Clay, Clinton, Coles, Edgar, Effingham, Franklin, Jackson, Jefferson, Lawrence, Macon, Madison, Marion, Massac, McLean, Morgan, Pulaski, Richland, Sangamon, St. Clair and Williamson Counties | Illinois | Alexander, Clay, Clinton, Coles, Edgar, Effingham, Franklin, Jackson, Jefferson, Lawrence, Macon, Madison, Marion, Massac, McDonough, McLean, Morgan, Pulaski, Richland, Saline, Sangamon, St Clair, Williamson |
| Wisper ISP | WISPER | Wireless Internet Service Provider - Madison, Jersey, Greene, St Clair, Bond, Clinton, Fayette - Illinois | Illinois | Bond, Clinton, Fayette, Greene, Jersey, Madison, St Clair |
| WK&T | WKTIL | Union, Johnson, Alexander, Pulaski, and Massac Counties | Illinois | Alexander, Johnson, Massac, Pulaski, Union |
| Zito Media | GLXYIL | Formerly Galaxy Cable - Alexander, Franklin, Hardin, Jackson, Jo Daviess, Johnson, Peoria, Pope, Pulaski, Saline and Williamson Counties | Illinois | Alexander, Franklin, Hardin, Jackson, Jo Daviess, Johnson, Peoria, Pope, Pulaski, Saline, Williamson |