| ADAMS RURAL ELECTRIC COOP | NPAREC | AT&T Non-Participating Code for ADAMS RURAL ELECTRIC COOP
Adams, Brown, Highland, Pike, and Scioto | Ohio | Adams, Brown, Highland, Pike, Scioto |
| American Electric Power/Columbus Southern Power | NPCSP | AT&T Non-Participating code - AEP- Columbus Southern Power | 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 |
| American Electric Power/Ohio Power | NPAEPO | AT&T Non-Participating Code
All counties | 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 |
| Armstrong Utilities, Inc. | NPARM | AT&T Non-Participating Code | Ohio | Gallia, Lawrence |
| AT&T Ohio | ATTOH | All of Ohio | 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 |
| Bright.net Internet Services | NPBNIS | AT&T Non-Participating Code for Bright.net | Ohio | Allen, Defiance, Paulding, Putnam |
| Buckeye Rural Electric Cooperative | NPBUCR | AT&T Non-Participating Code for Buckeye Rural Electric Cooperative
Athens, Gallia, Jackson, Lawrence, Meigs, Pike, Ross, Scioto, and Vinton | Ohio | Athens, Gallia, Jackson, Meigs, Pike, Ross, Scioto, Vinton |
| BUTLER RURAL ELECTRIC COOPERATIVE | NPBTLR | AT&T Non-Participating Code for BUTLER RURAL ELECTRIC COOP
Butler, Hamilton, Preble, and Montgomery | Ohio | Butler, Hamilton, Montgomery, Preble |
| CARROLL ELECTRIC COOPERATIVE | NPCARE | AT&T Non-Participating Code for CARROLL ELECTRIC COOPERATIVE
Carroll, Columbiana, Harrison, Jefferson, Stark, and Tuscarawas | Ohio | Carroll, Columbiana, Harrison, Jefferson, Stark, Tuscarawas |
| CENTURYLINK Facility License | NPLUCL | AT&T Non-Participating Code | 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 | NPCELE | AT&T Non-Participating Code for City of Columbus Electric | Ohio | Delaware, Fairfield, Franklin |
| City of Cuyahoga Falls - Electric Service Department | NPCUFA | AT&T Non-Participating Code for City of Cuyahoga Falls
Summit | Ohio | Summit |
| City of Hubbard Light Department | NPCHUB | AT&T Non-Participating Code for City of Hubbard Light Department
Trumbull | Ohio | Trumbull |
| City of Painesville | NPCPNS | AT&T Non-Participating Code for City of Painesville
Lake | Ohio | Lake |
| City of Piqua | NPCPIQ | AT&T Non-Participating Code for City of Piqua
Miami | Ohio | Miami |
| City of St Clairsville | NPCSCL | AT&T Non-Participating Code for City of St Clairsville
Belmont | Ohio | Belmont |
| City of Westerville | WSTRVL | Westerville City - Franklin and Delaware County | Ohio | Delaware, Franklin |
| Cleveland Electric Illuminating | NPCLEI | AT&T Non-Participating Code for Cleveland Electric Illuminating
Cuyahoga, Lake, Geauga, Medina, and Summit | Ohio | Cuyahoga, Geauga, Lake, Medina, Summit |
| Comcast Ohio | NPCMCT | AT&T Non-Participating Code for Comcast
Columbiana and Mahoning Counties | Ohio | Columbiana, Mahoning |
| Community Fiber Solutions | NPCFS | AT&T Non-Participating Code | Ohio | Erie, Miami, Putnam |
| Consolidated Electric | CONSEC | Counties include: Morrow, Richland, Knox, Marion, Delaware, Licking, Union and Franklin | Ohio | Delaware, Franklin, Knox, Licking, Marion, Morrow, Richland, Union |
| Crown Castle | NPCCOH | AT&T Non-Participating Code for Crown Castle | 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 |
| Dayton Power and Light | NPDYPL | AT&T Non-Participating Code | Ohio | Auglaize, Butler, Champaign, Clark, Darke, Fayette, Greene, Highland, Madison, Mercer, Miami, Montgomery, Pickaway, Preble, Shelby, Warren, Wayne |
| Duke Energy | NPDKEO | AT&T Non-Participating Code for Duke Energy, Ohio | Ohio | Adams, Brown, Butler, Clermont, Clinton, Hamilton, Highland, Montgomery, Preble, Warren |
| ENetworks LLC | NPENTW | AT&T Non-Participating Code for ENetworks
Entire state of Ohio | Ohio | Adams, 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 |
| Frontier Communications | NPFRCO | AT&T Non-Participating Code for Frontier Communications | 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 |
| FRONTIER POWER COMPANY | NPFRPC | AT&T Non-Participating Code for FRONTIER POWER COMPANY
Coshocton, Tuscarawas | Ohio | Coshocton, Tuscarawas |
| Ft. Jennings Cable | NPFTJC | AT&T Non-Participating Code for Ft. Jennings Cable | Ohio | Allen, Putnam |
| Ft. Jennings Telephone | NPFJTP | AT&T Non-Participating Code | Ohio | Allen, Putnam |
| Guernsey-Muskingum Electric Cooperative | GUEMUS | Serving members in Guernsey, Muskingum, Morgan, Perry, Noble, Licking, Harrison, Coshocton and Tuscarawas counites | Ohio | Coshocton, Guernsey, Harrison, Licking, Morgan, Muskingum, Noble, Perry, Tuscarawas |
| Hancock-Wood Electric Cooperative | HWE | Allen, Hancock, Hardin, Henry, Putnam, Sandusky, Seneca, Wood, and Wyandot Counties | Ohio | Allen, Erie, Hancock, Hardin, Henry, Putnam, Sandusky, Seneca, Wood, Wyandot |
| Independents Fiber Network | NPIFN | AT&T Non-Participating Code
Allen, Hancock, Hardin, Henry, Putnam, Sandusky, Seneca, Wood, and Wyandot Counties | Ohio | Allen, Hancock, Hardin, Henry, Putnam, Sandusky, Seneca, Wyandot |
| INSIGHT COMMUNICATIONS | NPINCO | AT&T Non-Participating Code | Ohio | Delaware, Fairfield, Franklin, Licking, Pickaway |
| LICKING RURAL ELECTRIFICATION | NPLKRE | AT&T Non-Participating Code
Licking, Knox, Richland, Ashland, Coshocton, Muskingum, Perry, Delaware and Franklin Counties. | Ohio | Ashland, Coshocton, Delaware, Franklin, Knox, Licking, Muskingum, Perry, Richland |
| Mediacom Communications – Kendallville | MEDOH1 | Defiance, Paulding | Ohio | Defiance, Paulding |
| Midwest Electric | NPMWEL | AT&T Non-Participating Code for Midwest Electric | Ohio | Allen, Auglaize, Van Wert |
| New Knoxville Telephone | NPNKNT | AT&T Non-Participating Code for New Knoxville Telephone | Ohio | Auglaize |
| NK Telco | NPNKTL | AT&T Non-Participating Code | Ohio | Auglaize |
| North Central Electric Cooperative | NPNCEC | AT&T Non-Participating Code | Ohio | Crawford, Seneca, Wyandot |
| Ohio Edison Company | NPOHED | AT&T Non-Participating Code for Ohio Edison Company | 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 |
| Orrville Utilities | NPORRU | AT&T Non-Participating Code for Orrville Utilities
Wayne | Ohio | Wayne |
| Paulding-Putnam Electric Cooperative | NPPPEC | AT&T Non-Participating Code | Ohio | Allen, Defiance, Paulding, Putnam |
| PIONEER RURAL ELECTRIC COOPERATIVE | NPPIOR | AT&T Non-Participating Code for Pioneer Rural Electric Cooperative
Miami, Champaign, Shelby,Mercer, Auglaize, Logan, Union, Madison, Clark, Montgomery, and Darke | Ohio | Auglaize, Champaign, Clark, Darke, Logan, Madison, Mercer, Miami, Montgomery, Shelby, Union |
| South Central Power Company | NPSCPC | AT&T Non-Participating Code for South Central Power Company
Belmont, Carroll, Harrison, Jefferson, Monroe, Noble, Adams, Brown, Clermont, Fayette, Highland, Pike, Ross, Scioto, Hocking, Fairfield, Pickaway, Madison, Ross, Franklin\ | Ohio | Adams, Belmont, Brown, Carroll, Clermont, Fairfield, Fayette, Franklin, Harrison, Highland, Hocking, Jefferson, Madison, Monroe, Noble, Pickaway, Pike, Ross, Scioto |
| Telephone Service Company | NPTSCO | AT&T Non-Participating Code | Ohio | Allen, Auglaize |
| Time Warner Cable (Charter Communications)) | NPTWCH | AT&T Non-Participating Code | 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 |
| Toledo Edison | NPTOLE | AT&T Non-Participating Code for Toledo Edison
Defiance, Fulton, Henry, Lucas, Ottawa, Putnam, Sandusky, Seneca, Williams, and Wood | Ohio | Defiance, Fulton, Henry, Lucas, Ottawa, Putnam, Sandusky, Seneca, Williams, Wood |
| Verizon | NPVRZN | AT&T Non-Participating Code for Verizon | 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 |
| Village of Ripley | NPVRIP | AT&T Non-Participating Code for Village of Ripley
Brown | Ohio | Brown |
| Village of Yellow Springs | NPVYSP | AT&T Non-Participating Code for Village of Yellow Springs
Greene | Ohio | Greene |
| Washington Electric Cooperative, Inc. | WHECOH | Washington Electric Cooperative, Inc. | Ohio | Athens, Guernsey, Monroe, Morgan, Noble, Washington |
| Windstream Western Reserve Incorporated | NPWDST | AT&T Non-Participating Code for Windstream Western Reserve Incorporated | 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 |