All assignees
204 prefixes in 878 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 878-300 | NEW CASTLE | 490J | 2021-12-10 | Yes |
| 878-301 | SMOCK | 624H | 2023-08-03 | Yes |
| 878-302 | NEWKNSNGTN | 967E | 2013-04-17 | Yes |
| 878-303 | BEAVER FLS | 547E | 2026-01-05 | Yes |
| 878-305 | ALIQUIPPA | 547E | 2026-02-26 | Yes |
| 878-306 | UNIONTOWN | 547E | 2026-03-18 | Yes |
| 878-307 | ROCHESTER | 547E | 2026-04-14 | Yes |
| 878-309 | GREENSBURG | 002F | 2018-09-25 | Yes |
| 878-311 | XXXXXXXXXX | MULT | — | — |
| 878-313 | ROCHESTER | 6392 | 2015-01-09 | Yes |
| 878-322 | DONORA | 516J | 2021-06-09 | Yes |
| 878-329 | SMITHFIELD | 624H | 2023-08-03 | Yes |
| 878-332 | WEXFORD | 4007 | 2014-01-28 | Yes |
| 878-333 | ELLWOOD CY | 547E | — | Yes |
| 878-335 | LOWELLVL | 516J | 2022-02-24 | Yes |
| 878-336 | PTTSBGZON6 | 965H | 2021-10-25 | Yes |
| 878-345 | PTGSBNZN20 | 965H | 2021-07-22 | Yes |
| 878-348 | BEAVER FLS | 965H | 2020-05-27 | Yes |
| 878-355 | UNIONTOWN | 6701 | 2017-06-02 | Yes |
| 878-356 | WESTNEWTON | 965H | 2021-08-18 | Yes |
| 878-377 | SHARPSVL | 965H | 2020-05-27 | Yes |
| 878-378 | WESTNEWTON | 547E | 2016-03-24 | Yes |
| 878-379 | WAYNESBURG | 6392 | 2017-04-26 | Yes |
| 878-400 | WAMPUM | 547E | — | Yes |
| 878-411 | XXXXXXXXXX | MULT | — | — |
| 878-422 | KITTANNING | 103F | 2014-04-01 | Yes |
| 878-425 | SAXONBURG | 422C | 2016-02-03 | Yes |
| 878-433 | CLAIRTON | 516J | 2022-01-08 | Yes |
| 878-439 | ROCHESTER | 7229 | 2017-09-28 | Yes |
| 878-444 | HOMER CITY | 547E | — | Yes |
| 878-465 | WEXFORD | 965H | 2021-10-25 | Yes |
| 878-477 | CHARLEROI | 547E | 2021-04-22 | Yes |
| 878-489 | HARRISONCY | 624H | 2023-08-03 | Yes |
| 878-500 | FORD CITY | 965H | — | Yes |
| 878-511 | XXXXXXXXXX | MULT | — | — |
| 878-522 | YOUNGWOOD | 624H | 2023-08-03 | Yes |
| 878-529 | BROWNSVL | 965H | 2021-09-08 | Yes |
| 878-545 | WASHINGTON | 6392 | 2026-05-14 | Yes |
| 878-553 | PTTSBGZON1 | 7229 | 2022-07-21 | Yes |
| 878-555 | DIR ASST | MULT | — | — |
| 878-587 | ENONVALLEY | 624H | 2023-08-03 | Yes |
| 878-598 | AMBRIDGE | 516J | 2021-04-12 | Yes |
| 878-599 | PTGSBNZN14 | 516J | 2021-04-14 | Yes |
| 878-600 | PTTSBGZON1 | 145J | 2019-03-27 | Yes |
| 878-611 | XXXXXXXXXX | MULT | — | — |
| 878-626 | PTTSBGZON7 | 516J | 2022-01-10 | Yes |
| 878-645 | GREENSBURG | 6392 | 2016-01-15 | Yes |
| 878-666 | MARION CTR | 547E | — | Yes |
| 878-668 | ENONVALLEY | 0176 | 2015-04-22 | Yes |
| 878-670 | PTTSBGZON1 | 939H | 2017-05-09 | Yes |
| 878-673 | DERRY | 516J | 2022-02-14 | Yes |
| 878-677 | NEWWLMNGTN | 965H | 2020-05-27 | Yes |
| 878-678 | BADEN | 3806 | 2020-03-26 | Yes |
| 878-688 | HOMER CITY | 965H | 2020-05-27 | Yes |
| 878-700 | — | — | ||
| 878-707 | MARION CTR | 624H | 2023-08-01 | Yes |
| 878-711 | XXXXXXXXXX | MULT | — | — |
| 878-723 | PTTSBGZON3 | 516J | 2022-01-10 | Yes |
| 878-728 | GIBSONIA | 547E | 2019-06-12 | Yes |
| 878-732 | PTGSBNZN19 | 516J | 2022-01-20 | Yes |
| 878-736 | MARCHAND | 516J | 2022-02-24 | Yes |
| 878-744 | MCLELANDTN | 624H | 2023-08-01 | Yes |
| 878-768 | VOLANT | 547E | 2020-02-11 | Yes |
| 878-777 | DERRY | 547E | — | Yes |
| 878-778 | BLACKTOWN | 547E | 2020-02-07 | Yes |
| 878-780 | CLYMER | 624H | 2023-08-01 | Yes |
| 878-782 | HOOKSTOWN | 516J | 2022-02-24 | Yes |
| 878-783 | AVONMORE | 516J | 2021-03-08 | Yes |
| 878-784 | EPALESTINE | 516J | 2022-02-18 | Yes |
| 878-786 | GREENSBURG | 516J | 2022-01-10 | Yes |
| 878-787 | PTTSBGZON1 | 965H | 2019-01-28 | Yes |
| 878-788 | FOXBURG | 547E | 2020-02-07 | Yes |
| 878-789 | PETROLIA | 547E | 2020-02-07 | Yes |
| 878-800 | PTGSBNZN15 | 733J | 2025-03-31 | Yes |
| 878-808 | FAIRCHANCE | 624H | 2023-08-01 | Yes |
| 878-811 | XXXXXXXXXX | MULT | — | — |
| 878-822 | BUTLER | 622J | 2021-09-20 | Yes |
| 878-834 | PTTSBGZON8 | 516J | 2022-01-10 | Yes |
| 878-837 | BENTLEYVL | 3806 | 2019-03-18 | Yes |
| 878-840 | NEW SALEM | 624H | 2023-08-01 | Yes |
| 878-844 | INDIANA | 516J | 2021-04-16 | Yes |
| 878-847 | NEWKNSNGTN | 547E | 2016-03-24 | Yes |
| 878-867 | NEWKNSNGTN | 939H | 2022-09-14 | Yes |
| 878-868 | NEWFLORNCE | 624H | 2023-08-01 | Yes |
| 878-870 | FARMINGTON | 547E | 2016-03-24 | Yes |
| 878-877 | BUTLER | 547E | 2020-01-24 | Yes |
| 878-878 | NEWBEDFORD | 624H | 2023-08-01 | Yes |
| 878-879 | NEWKNSNGTN | 547E | 2019-08-19 | Yes |
| 878-880 | WASHINGTON | 547E | 2020-05-14 | Yes |
| 878-881 | BROWNSVL | 547E | 2020-07-23 | Yes |
| 878-884 | GREENSBURG | 547E | 2020-12-18 | Yes |
| 878-887 | PARIS | 547E | 2020-10-08 | Yes |
| 878-888 | PARKWOOD | 547E | — | Yes |
| 878-895 | UNIONTOWN | 506J | 2020-11-18 | Yes |
| 878-898 | COOPERSTWN | 547E | 2022-11-03 | Yes |
| 878-900 | EPALESTINE | 547E | — | Yes |
| 878-911 | XXXXXXXXXX | MULT | — | — |
| 878-950 | — | — | ||
| 878-958 | — | — | ||
| 878-959 | MULT | — | — |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.