All assignees
629 prefixes in 401 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 401-400 | PROVIDENCE | 003F | 2010-03-04 | Yes |
| 401-401 | — | — | ||
| 401-402 | GREENWICH | 829J | 2001-10-08 | Yes |
| 401-403 | PROVIDENCE | 5562 | 2011-09-09 | Yes |
| 401-404 | CENTREDALE | 829J | — | Yes |
| 401-405 | CUMBLND HL | 318J | — | Yes |
| 401-406 | PROVIDENCE | 6389 | 2012-03-19 | Yes |
| 401-407 | COVENTRY | 624H | — | Yes |
| 401-408 | PROVIDENCE | 6389 | 2012-05-23 | Yes |
| 401-409 | CAROLINA | 7421 | 2012-06-11 | Yes |
| 401-410 | BRISTOL | 829J | — | Yes |
| 401-411 | XXXXXXXXXX | MULT | — | — |
| 401-412 | COVENTRY | 829J | 2002-02-26 | Yes |
| 401-413 | PROVIDENCE | 5562 | 2002-03-12 | Yes |
| 401-414 | PROVIDENCE | 507H | 2014-11-19 | Yes |
| 401-415 | PROVIDENCE | 829J | 2008-07-17 | Yes |
| 401-416 | CUMBLND HL | 6889 | 2022-01-27 | Yes |
| 401-417 | NEWPORT | 977E | — | Yes |
| 401-418 | PORTSMOUTH | 5562 | 2002-07-30 | Yes |
| 401-419 | PROVIDENCE | 5562 | — | Yes |
| 401-420 | LTLCOMPTON | 7229 | — | Yes |
| 401-421 | PROVIDENCE | 9102 | — | — |
| 401-422 | PAWTUCKET | 6889 | 2022-11-30 | Yes |
| 401-423 | JAMESTOWN | 9102 | — | Yes |
| 401-424 | BRISTOL | 7229 | — | Yes |
| 401-425 | CUMBLND HL | 6889 | 2016-01-12 | Yes |
| 401-426 | CUMBLND HL | 6889 | 2010-02-17 | Yes |
| 401-427 | PROVIDENCE | 829J | — | Yes |
| 401-428 | PAWTUCKET | 4016 | — | Yes |
| 401-429 | PROVIDENCE | 732J | — | Yes |
| 401-430 | PROVIDENCE | 6389 | 2012-09-06 | Yes |
| 401-431 | PROVIDENCE | 9102 | — | Yes |
| 401-432 | PROVIDENCE | 9102 | — | Yes |
| 401-433 | PROVIDENCE | 9102 | — | Yes |
| 401-434 | PROVIDENCE | 9102 | — | — |
| 401-435 | PROVIDENCE | 9102 | — | — |
| 401-436 | PAWTUCKET | 732J | 2023-03-02 | Yes |
| 401-437 | PROVIDENCE | 9102 | — | Yes |
| 401-438 | PROVIDENCE | 9102 | — | — |
| 401-439 | PROVIDENCE | 6389 | — | — |
| 401-440 | PROVIDENCE | 4036 | — | — |
| 401-441 | PROVIDENCE | 4036 | 2005-05-10 | Yes |
| 401-442 | PROVIDENCE | 4036 | 2012-10-18 | Yes |
| 401-443 | PROVIDENCE | 318J | — | Yes |
| 401-444 | PROVIDENCE | 9102 | — | — |
| 401-445 | PROVIDENCE | 490J | 2023-05-05 | Yes |
| 401-446 | NARRAGNSTT | 977E | 2023-12-15 | Yes |
| 401-447 | PROVIDENCE | 6389 | — | — |
| 401-448 | PAWTUCKET | 977E | 2023-12-15 | Yes |
| 401-449 | PROVIDENCE | 6389 | 2024-01-09 | Yes |
| 401-450 | PROVIDENCE | 7229 | — | Yes |
| 401-451 | PROVIDENCE | 4036 | — | — |
| 401-452 | PROVIDENCE | 003F | — | — |
| 401-453 | PROVIDENCE | 9102 | — | — |
| 401-454 | PROVIDENCE | 9102 | — | Yes |
| 401-455 | PROVIDENCE | 9102 | — | — |
| 401-456 | PROVIDENCE | 9102 | — | — |
| 401-457 | PROVIDENCE | 9102 | — | Yes |
| 401-458 | PROVIDENCE | 9102 | — | Yes |
| 401-459 | PROVIDENCE | 9102 | — | Yes |
| 401-460 | PROVIDENCE | 003F | — | — |
| 401-461 | PROVIDENCE | 9102 | — | — |
| 401-462 | PROVIDENCE | 9102 | — | — |
| 401-463 | PROVIDENCE | 9102 | — | — |
| 401-464 | PROVIDENCE | 9102 | — | Yes |
| 401-465 | PROVIDENCE | 6389 | — | — |
| 401-466 | BLOCK IS | 9102 | — | Yes |
| 401-467 | PROVIDENCE | 9102 | — | — |
| 401-468 | WARWICK | 9102 | — | Yes |
| 401-469 | PASCOAG | 977E | 2024-02-21 | Yes |
| 401-470 | PROVIDENCE | 508J | 2015-09-16 | Yes |
| 401-471 | GREENWICH | 829J | — | Yes |
| 401-472 | PORTSMOUTH | 7229 | — | Yes |
| 401-473 | PROVIDENCE | 7229 | — | Yes |
| 401-474 | PROVIDENCE | 6389 | — | — |
| 401-475 | PAWTUCKET | 318J | — | Yes |
| 401-476 | CENTREDALE | 977E | 2025-01-09 | Yes |
| 401-477 | PROVIDENCE | 9102 | — | Yes |
| 401-478 | PROVIDENCE | 003F | — | — |
| 401-479 | PROVIDENCE | 6389 | 2011-12-14 | Yes |
| 401-480 | PROVIDENCE | 6389 | — | — |
| 401-481 | PROVIDENCE | 5562 | — | Yes |
| 401-482 | PROVIDENCE | 003F | — | — |
| 401-483 | BRISTOL | 829J | 2012-08-21 | Yes |
| 401-484 | PROVIDENCE | 9102 | — | Yes |
| 401-485 | WESTERLY | 4016 | — | Yes |
| 401-486 | PROVIDENCE | 6389 | — | — |
| 401-487 | PROVIDENCE | 6389 | — | — |
| 401-488 | WOONSOCKET | 829J | — | Yes |
| 401-489 | PROVIDENCE | 6389 | 2007-09-13 | Yes |
| 401-490 | PROVIDENCE | 829J | — | Yes |
| 401-491 | HOPEVALLEY | 318J | — | Yes |
| 401-492 | CUMBLND HL | 6889 | 2024-01-10 | Yes |
| 401-495 | PAWTUCKET | 829J | — | Yes |
| 401-496 | PORTSMOUTH | 977E | — | — |
| 401-497 | PROVIDENCE | 6889 | — | — |
| 401-498 | WGLOCESTER | 7351 | — | Yes |
| 401-499 | PROVIDENCE | 6889 | 2001-10-01 | — |
| 401-500 | PROVIDENCE | 6389 | 2011-03-14 | Yes |
| 401-501 | — | — |
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.