All assignees
204 prefixes in 878 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 878-976 | — | — | ||
| 878-978 | PTTSBGZON1 | 547E | 2021-07-22 | Yes |
| 878-988 | PT MARION | 624H | 2023-08-01 | Yes |
| 878-999 | PTTSBGZON1 | 547E | 2015-09-15 | Yes |
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.