All assignees
800 prefixes in 508 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 508-400 | HOPKINTON | 5562 | — | Yes |
| 508-401 | WAYLAND | 7229 | 2002-06-04 | Yes |
| 508-402 | FALL RIVER | 829J | — | Yes |
| 508-403 | CATAUMET | 4018 | — | Yes |
| 508-404 | WALPOLE | 7135 | — | Yes |
| 508-405 | FRAMINGHAM | 7619 | — | Yes |
| 508-406 | MANSFIELD | 4018 | — | Yes |
| 508-407 | AUBURN | 829J | — | Yes |
| 508-408 | BROCKTON | 7229 | — | Yes |
| 508-409 | ATTLEBORO | 4036 | — | Yes |
| 508-410 | WORCESTER | 6889 | — | — |
| 508-411 | XXXXXXXXXX | MULT | — | — |
| 508-412 | WESTBORO | 6083 | — | — |
| 508-413 | PROVINCETN | 4018 | 2002-05-23 | Yes |
| 508-414 | WORCESTER | 4036 | — | — |
| 508-415 | FALL RIVER | 4036 | 2002-07-03 | Yes |
| 508-416 | FRAMINGHAM | 7135 | — | Yes |
| 508-417 | HOPKINTON | 7229 | — | Yes |
| 508-418 | HYANNIS | 829J | — | Yes |
| 508-419 | OSTERVILLE | 4018 | — | Yes |
| 508-420 | OSTERVILLE | 9102 | — | — |
| 508-421 | WORCESTER | 9102 | — | — |
| 508-422 | MILFORD | 9102 | — | Yes |
| 508-423 | BILLERICA | 4036 | — | — |
| 508-424 | FRAMINGHAM | 9102 | — | Yes |
| 508-425 | WORCESTER | 7619 | — | Yes |
| 508-426 | AUBURN | 990E | — | — |
| 508-427 | BROCKTON | 9102 | — | — |
| 508-428 | OSTERVILLE | 9102 | — | — |
| 508-429 | HOLLISTON | 9102 | — | — |
| 508-430 | HARWICH | 9102 | — | — |
| 508-431 | ATTLEBORO | 9102 | — | Yes |
| 508-432 | HARWICH | 9102 | — | — |
| 508-433 | NATICK | 892D | — | Yes |
| 508-434 | CHARLTON | 4018 | — | Yes |
| 508-435 | HOPKINTON | 9102 | — | — |
| 508-436 | BROCKTON | 829J | — | Yes |
| 508-437 | BARNSTABLE | 7229 | — | Yes |
| 508-438 | WORCESTER | 829J | — | — |
| 508-439 | WESTBORO | 7619 | — | Yes |
| 508-440 | FRANKLIN | 7619 | — | Yes |
| 508-441 | NEWBEDFORD | 5562 | — | Yes |
| 508-442 | PLYMOUTH | 6083 | — | — |
| 508-443 | BRIDGEWTR | 4018 | — | Yes |
| 508-444 | FALMOUTH | 4018 | — | Yes |
| 508-445 | CATAUMET | 7229 | — | Yes |
| 508-446 | FRANKLIN | 4036 | 2002-07-08 | Yes |
| 508-447 | FOXBORO | 6083 | — | — |
| 508-448 | REHOBOTH | 7229 | — | Yes |
| 508-449 | MARLBORO | 4018 | — | Yes |
| 508-450 | WORCESTER | 6387 | — | — |
| 508-451 | LAWRENCE | 4036 | — | — |
| 508-452 | MANSFIELD | 829J | — | Yes |
| 508-453 | WORCESTER | 829J | — | — |
| 508-454 | WALPOLE | 6889 | — | Yes |
| 508-455 | ATTLEBORO | 318J | — | Yes |
| 508-456 | EBRIDGEWTR | 318J | — | Yes |
| 508-457 | FALMOUTH | 9102 | — | Yes |
| 508-458 | MILFORD | 7229 | — | Yes |
| 508-459 | WORCESTER | 829J | — | Yes |
| 508-460 | MARLBORO | 9102 | — | — |
| 508-461 | WEBSTER | 7619 | — | Yes |
| 508-462 | CHARLTON | 7229 | — | Yes |
| 508-463 | ATTLEBORO | 7229 | — | Yes |
| 508-464 | UPTON | 7229 | — | Yes |
| 508-465 | CARVER | 318J | 2006-10-23 | Yes |
| 508-466 | NORTHBORO | 892D | — | Yes |
| 508-467 | MARLBORO | 7135 | — | — |
| 508-468 | BROCKTON | 7135 | — | Yes |
| 508-469 | CHATHAM | 829J | — | Yes |
| 508-470 | DENNIS | 990E | — | Yes |
| 508-471 | WORCESTER | 829J | — | Yes |
| 508-472 | WALPOLE | 6889 | — | Yes |
| 508-473 | MILFORD | 9102 | — | — |
| 508-474 | HOLLISTON | 829J | — | Yes |
| 508-475 | WESTBORO | 9102 | — | Yes |
| 508-476 | E DOUGLAS | 9102 | — | Yes |
| 508-477 | OSTERVILLE | 9102 | — | — |
| 508-478 | MILFORD | 9102 | — | — |
| 508-479 | DOVER | 6387 | — | — |
| 508-480 | MARLBORO | 9102 | — | Yes |
| 508-481 | MARLBORO | 9102 | — | — |
| 508-482 | MILFORD | 9102 | — | — |
| 508-483 | FRAMINGHAM | 9102 | — | — |
| 508-484 | BROCKTON | 7229 | — | Yes |
| 508-485 | MARLBORO | 9102 | — | — |
| 508-486 | MARLBORO | 9102 | — | — |
| 508-487 | PROVINCETN | 9102 | — | — |
| 508-488 | MILFORD | 829J | — | Yes |
| 508-489 | FRAMINGHAM | 9102 | — | — |
| 508-490 | MARLBORO | 9102 | — | — |
| 508-491 | FALL RIVER | 9102 | — | Yes |
| 508-492 | WALPOLE | 990E | — | Yes |
| 508-493 | FALL RIVER | 4036 | — | — |
| 508-494 | FRAMINGHAM | 4036 | — | — |
| 508-495 | FALMOUTH | 9102 | — | Yes |
| 508-496 | FALL RIVER | 6889 | — | — |
| 508-497 | HOPKINTON | 9102 | — | — |
| 508-498 | MILFORD | 4036 | — | — |
| 508-499 | OXFORD | 829J | 2003-11-12 | 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.