All assignees
152 prefixes in 227 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 227-300 | ASHTON236 | 6855 | 2025-10-21 | Yes |
| 227-301 | WSHNGTNZN2 | 4036 | 2026-03-18 | Yes |
| 227-302 | WSHNGTNZN4 | 490J | 2026-04-07 | Yes |
| 227-303 | WSNGTNZN10 | 6855 | 2025-10-21 | Yes |
| 227-304 | WSNGTNZN10 | 6855 | 2025-10-20 | Yes |
| 227-305 | WSNGTNZN10 | 4036 | 2025-12-29 | Yes |
| 227-306 | LEONARDTN | 6395 | 2026-06-25 | Yes |
| 227-307 | WSHNGTNZN2 | 4036 | 2026-07-10 | Yes |
| 227-308 | WSHNGTNZN3 | 876D | 2026-07-27 | Yes |
| 227-309 | WSNG236Z13 | 876D | 2026-07-27 | Yes |
| 227-310 | WSNGTNZN10 | 6855 | 2026-02-26 | Yes |
| 227-311 | XXXXXXXXXX | MULT | — | — |
| 227-312 | WSNGTNZN11 | 876D | 2026-08-07 | Yes |
| 227-313 | WSHNGTNZN5 | 876D | 2026-08-07 | Yes |
| 227-314 | WALDORF | 4036 | 2026-08-10 | Yes |
| 227-315 | ASHTON236 | 071F | 2026-01-07 | Yes |
| 227-316 | BRUNSWICK | 876D | 2026-08-12 | Yes |
| 227-317 | FREDERICK | 876D | 2026-08-12 | Yes |
| 227-318 | MYERSVILLE | 4036 | 2026-08-13 | Yes |
| 227-319 | WSNGTNZN10 | 4036 | 2026-09-01 | Yes |
| 227-320 | LAUREL236 | 4036 | 2026-09-02 | Yes |
| 227-321 | WSHNGTNZN4 | 876D | 2026-09-04 | Yes |
| 227-333 | WSNGTNZN16 | 876D | 2025-08-20 | Yes |
| 227-334 | KEEDYSVL | 7421 | 2024-10-22 | Yes |
| 227-338 | WSNGTNZN10 | 6855 | 2025-10-08 | Yes |
| 227-368 | MECHANCSVL | 530H | 2023-08-17 | Yes |
| 227-411 | XXXXXXXXXX | MULT | — | — |
| 227-444 | WSHNGTNZN2 | 876D | 2025-08-20 | Yes |
| 227-500 | GAITHERSBG | 824J | 2026-03-18 | Yes |
| 227-511 | XXXXXXXXXX | MULT | — | — |
| 227-529 | GAITHERSBG | 876D | 2025-12-29 | Yes |
| 227-555 | DIR ASST | MULT | — | — |
| 227-611 | XXXXXXXXXX | MULT | — | — |
| 227-666 | FREDERICK | 876D | 2025-12-22 | Yes |
| 227-700 | — | — | ||
| 227-711 | XXXXXXXXXX | MULT | — | — |
| 227-722 | WALDORF | 624H | 2024-04-23 | Yes |
| 227-727 | WSHNGTNZN6 | 624H | 2024-11-06 | Yes |
| 227-770 | WSNGTNZN11 | 624H | 2024-11-06 | Yes |
| 227-772 | WSHNGTNZN4 | 624H | 2024-11-06 | Yes |
| 227-777 | ASHTON238 | 530H | 2023-07-27 | Yes |
| 227-800 | FREDERICK | 624H | 2024-11-06 | Yes |
| 227-811 | XXXXXXXXXX | MULT | — | — |
| 227-888 | WSNG238Z15 | 530H | 2023-09-18 | Yes |
| 227-911 | XXXXXXXXXX | MULT | — | — |
| 227-950 | — | — | ||
| 227-958 | — | — | ||
| 227-959 | — | — | ||
| 227-976 | — | — | ||
| 227-997 | WSHNGTNZN2 | 6395 | 2025-02-05 | Yes |
| 227-998 | WSHNGTNZN2 | 6395 | 2024-10-08 | Yes |
| 227-999 | WSNGTNZN10 | 530H | 2023-10-11 | 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.