| 878-201 | Rochester, PA | Landline | Peerless Network Of Pennsylvania |
| 878-202 | Sharon, PA | Landline | Time Warner Cable Information Svcs (pa), Pa |
| 878-203 | Centurylink Communications Llc | Landline | Pittsburgh |
| 878-204 | Windstream Pennsylvania, Inc. | Landline | Pittsburgh |
| 878-218 | Cellco Partnership Dba Verizon Wireless - Pa | Wireless | Pittsburgh |
| 878-222 | New Wilmington, PA | Landline | Voxbeam Telecommunications Inc. |
| 878-228 | Centurylink Communications Llc | Landline | Pittsburgh |
| 878-258 | Freeport, PA | Landline | Salsgiver Telecom |
| 878-266 | Windstream Pennsylvania, Inc. | Landline | Pittsburgh |
| 878-271 | Centurylink Communications Llc | Landline | Pittsburgh |
| 878-295 | Greensburg, PA | Wireless | Aerial Communications |
| 878-302 | Pittsburgh, PA | Landline | Peerless Network Of Pennsylvania |
| 878-313 | Cellco Partnership Dba Verizon Wireless - Pa | Wireless | Pittsburgh |
| 878-332 | Wexford, PA | Landline | Level 3 Communications |
| 878-333 | Voxbeam Telecommunications Inc. - Pa | Landline | Pittsburgh |
| 878-422 | Freeport, PA | Landline | Salsgiver Telecom |
| 878-444 | Homer City, PA | Landline | Voxbeam Telecommunications Inc. |
| 878-668 | Windstream Pennsylvania, Inc. | Landline | Pittsburgh |
| 878-777 | Derry, PA | Landline | Voxbeam Telecommunications Inc. |
| 878-999 | Neutral Tandem-pennsylvania, Llc - Pa | - | Pittsburgh |