| AEP | AEPNEW | Ohio Newark & Athens District - Fairfield, Guernsey, Hocking, Knox, Licking, Morgan, Muskingum, Noble, Perry Counties | Ohio | Fairfield, Guernsey, Hocking, Knox, Licking, Morgan, Muskingum, Noble, Perry |
| Amereican Electric Power | AEPCOL | Columbus District - Delaware, Franklin, Licking, Madison, Pickaway, Union Counties | Ohio | Delaware, Franklin, Licking, Madison, Pickaway, Union |
| American Electric Power | AEPCHI | Ohio Chillicothe & Athens Districts - Adams, Athens, Brown, Fayette, Gallia, Highland, Hocking, Jackson, Lawrence, Meigs, Morgan, Monroe, Noble, Pickaway, Pike, Ross, Scioto, Vinton and Washington Counties | Ohio | Adams, Athens, Brown, Fayette, Gallia, Highland, Hocking, Jackson, Lawrence, Meigs, Pickaway, Pike, Ross, Scioto, Vinton |
| American Electric Power/Ohio Power | AEPCAN | Ashland, Carroll, Columbiana, Coshocton, Harrison, Holmes, Stark, Summit, Tuscarawas and Wayne Counties | Ohio | Ashland, Carroll, Holmes, Stark, Summit, Tuscarawas, Wayne |
| AMERICAN ELECTRIC POWER/Ohio Power | AEPSTU | Belmont, Carroll, Columbiana, Guernsey, Harrison, Jefferson, Monroe and Noble Counties | Ohio | Belmont, Carroll, Columbiana, Guernsey, Harrison, Jefferson, Monroe, Noble |
| AMERICAN ELECTRIC POWER/Ohio Power | AEPWOH | Allen, Ashland, Auglaize, Crawford, Darke, Defiance, Hancock, Hardin, Henry, Huron, Logan, Marion, Mercer, Morrow, Paulding, Putnam, Richland, Sandusky, Seneca, Union, Van Wert, Wood & Wyandot Counties | Ohio | Allen, Ashland, Auglaize, Crawford, Darke, Defiance, Hancock, Hardin, Henry, Huron, Logan, Marion, Mercer, Morrow, Paulding, Putnam, Richland, Sandusky, Seneca, Union, Van Wert, Wood, Wyandot |
| Armstrong Utilities, Inc. | ARMS07 | This consists of most all of Lawrence County: Ironton, Coal Grove, Kitts Hill, Willow Wood, Symmes Valley, Scottown, Aid, Chesapeake, South Point, Proctorville, Athalia and the southern portion of Gallia County. | Ohio | Gallia, Lawrence |
| AT&T Ohio | ATTWOH | Joint Use with AEP Western Ohio | Ohio | Hancock, Sandusky, Seneca, Wood, Wyandot |
| Benton Ridge Cablevision | BRCAB | Benton Ridge, New Bavaria, North Creek | Ohio | Hancock, Henry, Putnam |
| Benton Ridge Telephone | BRTEL | Benton Ridge, New Bavaria and North Creek | Ohio | Hancock, Henry, Putnam |
| Buckeye Cable | BUCABL | Joint Use with AEP Western Ohio | Ohio | Hancock, Sandusky, Wood |
| Buckeye Cable System | BCS | Fiber optic cables heading South through Wood and Hancock counties. Fiber optic cables heading East through Sandusky county | Ohio | Hancock, Sandusky, Wood |
| Buckeye Telesystems | BTS | Fiber optic cables heading South through Wood and Hancock counties. Fiber optic cables heading East through Sandusky county | Ohio | Hancock, Sandusky, Wood |
| CenturyLink Ohio | CTLOHE | Formerly Embarq Eastern Ohio - Athens, Coshocton, Crawford, Delaware, Fairfield, Fayette, Holmes, Knox, Licking, Madison, Marion, Morgan, Morrow, Muskingum, Noble, Perry, Pickaway, Richland, Washington and Wayne counties | Ohio | Athens, Coshocton, Crawford, Delaware, Fairfield, Fayette, Holmes, Knox, Licking, Madison, Marion, Morgan, Morrow, Muskingum, Noble, Perry, Pickaway, Richland, Washington, Wayne |
| CenturyLink Ohio | CTLOHW | Allen, Hancock, Hardin, Henry, Putnam, Sandusky, Seneca, Wood and Wyandot counties | Ohio | Allen, Hancock, Hardin, Henry, Putnam, Sandusky, Seneca, Wood, Wyandot |
| CenturyLink Ohio (Osmose) | CLMROH | Centurylink Joint Use code used by Osmose | Ohio | Adams, ADMIN, Allen, Ashland, Ashtabula, Athens, Auglaize, Belmont, Brown, Butler, Carroll, Champaign, Clark, Clermont, Clinton, Columbiana, Coshocton, Crawford, Cuyahoga, Darke, Defiance, Delaware, Erie, Fairfield, Fayette, Franklin, Fulton, Gallia, Geauga, Greene, Guernsey, Hamilton, Hancock, Hardin, Harrison, Henry, Highland, Hocking, Holmes, Huron, Jackson, Jefferson, Knox, Lake, Lawrence, Licking, Logan, Lorain, Lucas, Madison, Mahoning, Marion, Medina, Meigs, Mercer, Miami, Monroe, Montgomery, Morgan, Morrow, Muskingum, Noble, Ottawa, Paulding, Perry, Pickaway, Pike, Portage, Preble, Putnam, Richland, Ross, Sandusky, Scioto, Seneca, Shelby, Stark, Summit, Trumbull, Tuscarawas, Union, Van Wert, Vinton, Warren, Washington, Wayne, Williams, Wood, Wyandot |
| City of Columbus Electric | COCELE | City of Columbus Electric | Ohio | Delaware, Fairfield, Franklin |
| Comcast Ohio | COMCWO | Joint Use with AEP Western Ohio | Ohio | Paulding, Van Wert |
| Comcast Ohio | COMOH | Columbiana and Mahoning Counties | Ohio | Columbiana, Mahoning |
| Community Fiber Solutions | CFS | Northwest Ohio | Ohio | Darke, Defiance, Delaware, Erie, Hancock, Hardin, Henry, Huron, Knox, Logan, Madison, Marion, Mercer, Miami, Morrow, Paulding, Putnam, Richland, Sandusky, Seneca, Shelby, Union, Van Wert, Wood, Wyandot |
| Consolidated Electric | CONSEC | Counties include: Morrow, Richland, Knox, Marion, Delaware, Licking, Union and Franklin | Ohio | Delaware, Franklin, Knox, Licking, Marion, Morrow, Richland, Union |
| Continental Telephone | TDSCON | Joint Use with AEP Western Ohio | Ohio | Paulding, Van Wert |
| Crown Castle | CRWNOH | Butler County: East of Indiana State line. South of Preble County line. North of Stillwell Beckett Rd. West of Hwy 177. Hamilton County: North of Kentucky State line. South of Hwy 126. East of Glenway Ave. West of Red Bank Expy. | Ohio | Allen, Ashland, Belmont, Butler, Clark, Clinton, Columbiana, Cuyahoga, Defiance, Delaware, Erie, Fairfield, Franklin, Geauga, Greene, Guernsey, Hamilton, Hancock, Hardin, Huron, Lake, Licking, Lorain, Lucas, Madison, Marion, Medina, Mercer, Miami, Montgomery, Muskingum, Pickaway, Portage, Preble, Stark, Summit, Trumbull, Tuscarawas, Union, Van Wert, Warren, Wayne, Wood, Wyandot |
| Fibertech Networks (Crown Castle) | FSCSP | Delaware, Franklin, Stark | Ohio | Delaware, Franklin, Stark |
| Ft. Jennings Cable | FJCABL | Joint Use with AEP Western Ohio | Ohio | Allen, Putnam |
| Ft. Jennings Telephone | FJTELE | Joint Use with AEP Western Ohio | Ohio | Allen, Putnam |
| Glandorf Telephone | GLATEL | Joint Use with AEP Western Ohio | Ohio | Putnam |
| Independents Fiber Network | IFN | Allen, Hancock, Hardin, Henry, Putnam, Sandusky, Seneca, Wood, and Wyandot Counties | Ohio | Allen, Hancock, Hardin, Henry, Putnam, Sandusky, Seneca, Wyandot |
| Kalida CATV | KALCBL | Joint Use with AEP Western Ohio | Ohio | Putnam |
| Kalida Telephone | KALTEL | Joint Use with AEP Western Ohio | Ohio | Putnam |
| LICKING RURAL ELECTRIFICATION | LICKRE | Licking, Knox, Richland, Ashland, Coshocton, Muskingum, Perry, Delaware and Franklin Counties. | Ohio | Ashland, Coshocton, Delaware, Franklin, Knox, Licking, Muskingum, Perry, Richland |
| Mid-Ohio Energy Cooperative, Inc. | MOHELC | Joint Use with AEP Western Ohio | Ohio | Allen, Auglaize, Crawford, Hancock, Hardin, Logan, Marion, Morrow, Union, Wyandot |
| Middle Point Home Telephone Co. | MIDTEL | Joint Use with AEP Western Ohio | Ohio | Van Wert |
| Midwest Electric | MDWEL | Joint Use with AEP Western Ohio | Ohio | Allen, Auglaize, Van Wert |
| North Central Electric Cooperative | NCEELE | Joint Use with AEP Western Ohio | Ohio | Crawford, Seneca, Wyandot |
| Oakwood Mutual Telephone | TDSOAK | Joint Use with AEP Western Ohio | Ohio | Paulding |
| Ottoville Telephone | OTVTEL | Joint Use with AEP Western Ohio | Ohio | Paulding, Putnam, Van Wert |
| Paulding-Putnam Electric Cooperative | PPEELE | Joint Use with AEP Western Ohio | Ohio | Allen, Defiance, Paulding, Putnam |
| Q1 Cable | Q1CABL | Joint Use with AEP Western Ohio | Ohio | Putnam |
| Sherwood Mutual Telephone Association | SHWTEL | Joint Use with AEP Western Ohio | Ohio | Defiance, Paulding |
| TDS Telecom | TDSARC | Former Arcadia Telephone Company | Ohio | Hancock |
| TDS Telecom | TDSVAN | Former Vanlue Telephone Company | Ohio | Hancock |
| Telephone Service Company | TSCTEL | Joint Use with AEP Western Ohio | Ohio | Allen, Auglaize |
| Time Warner Cable | ADELCO | Formerly Adelphia - Delaware, Knox, Holmes, Stark, Mahoning, Licking, Coshocton, Tuscarawas, Carroll, Columbiana, Fairfield, Perry, Muskingum, Guernsey, Harrison, Jefferson, Hocking, Athens, Morgan, Noble | Ohio | Athens, Carroll, Columbiana, Coshocton, Delaware, Fairfield, Guernsey, Harrison, Hocking, Holmes, Jefferson, Knox, Licking, Mahoning, Morgan, Muskingum, Noble, Perry, Stark, Tuscarawas |
| Time Warner Cable | ADELNP | Formerly Adelphia - Tuscarawas, Holmes, Coshocton, Carroll, Stark and Wayne Counties | Ohio | Carroll, Coshocton, Holmes, Stark, Tuscarawas, Wayne |
| Time Warner Cable | ADELNW | Formerly Adelphia - Williams, Fulton, Lucas, Defiance, Henry, Wood, Paulding, Putnam, Hancock, Van Wert, Allen, Mercer, Auglaize, Hardin, Wyandot, Marion, Darke, Shelby | Ohio | Allen, Auglaize, Darke, Defiance, Fulton, Hancock, Hardin, Henry, Lucas, Marion, Mercer, Paulding, Putnam, Shelby, Van Wert, Williams, Wood, Wyandot |
| Time Warner Cable | ADELOH | Formerly Adelphia - Mahoning and Trumble Counties | Ohio | Mahoning, Trumbull |
| Time Warner Cable | TWCCOL | TIME WARNER CABLE - Delaware, Franklin & Pickaway Counties | Ohio | Delaware, Franklin, Pickaway |
| Time Warner Cable | TWCNEO | Cuyahoga, Geauga, Lorain, & Lake counties | Ohio | Cuyahoga, Geauga, Lake, Lorain |
| WATCH Communications | WATCH | Northwest Ohio
| Ohio | Darke, Defiance, Delaware, Erie, Hancock, Hardin, Henry, Huron, Knox, Logan, Madison, Marion, Mercer, Miami, Morrow, Paulding, Putnam, Richland, Sandusky, Seneca, Shelby, Union, Van Wert, Wood, Wyandot |
| Windstream Ohio | ATOH01 | Ohio - Ashtabula area in the counties of Ashtabula, Trumbull and Lake | Ohio | Ashtabula, Lake, Trumbull |
| Windstream Ohio | ATOH23 | Ohio - Southeastern area in the counties of Harrison, Jefferson, Belmont, Monroe, Guernsey, Noble, Muskingum (southeast), Washington, Athens and Meigs | Ohio | Athens, Belmont, Guernsey, Harrison, Jefferson, Meigs, Monroe, Muskingum, Noble, Washington |
| Windstream Ohio | ATOH58 | Ohio - Newark area in the counties of Muskingum (southwest, Licking, Perry (northeast), Knox (southeast) | Ohio | Knox, Licking, Muskingum, Perry |
| Windstream Ohio | WNDWOH | Joint Use with AEP Western Ohio | Ohio | Defiance, Hardin, Marion, Paulding, Wyandot |
| Windstream Ohio KDL | KDLCSP | Adams, Athens, Delaware, Franklin, Licking, Madison, Noble, Pike and Scioto counties | Ohio | Adams, Athens, Delaware, Franklin, Licking, Madison, Noble, Pike, Scioto |
| Windstream Ohio Western Reserve | WWRWOH | Joint Use with AEP Western Ohio | Ohio | Defiance, Hardin, Marion, Paulding, Wyandot |
| Yes Learning and Comprehension | YESLRN | Joint Use with AEP Western Ohio | Ohio | Allen |
| Zayo Fiber Solutions | ACCOH | Formerly First Communications & Allegheny Communications Connect - Mahoning and Trumbull Counties | Ohio | Mahoning, Trumbull |