All assignees
605 prefixes in 641 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 641-992 | LTL CEDAR | 1177 | 2006-05-01 | — |
| 641-995 | SWALEDALE | 1127 | — | — |
| 641-997 | OTTUMWA | 6266 | 2024-11-11 | Yes |
| 641-998 | THORNTON | 1127 | — | — |
| 641-999 | NASHUA | 221F | 2018-02-16 | 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.