All assignees
646 prefixes in 413 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 413-400 | MONTAGUE | 990E | 2011-03-18 | Yes |
| 413-401 | — | — | ||
| 413-402 | SHEFFIELD | 990E | 2013-05-21 | Yes |
| 413-403 | DALTON | 829J | — | — |
| 413-404 | AMHERST | 4036 | 2014-03-06 | Yes |
| 413-405 | SPRINGFLD | 073H | 2021-05-27 | Yes |
| 413-406 | AMHERST | 4036 | 2014-06-17 | Yes |
| 413-407 | CHESTER | 145J | — | Yes |
| 413-408 | EASTHAMPTN | 197D | 2021-06-18 | Yes |
| 413-409 | HOLYOKE | 6889 | 2014-10-14 | Yes |
| 413-410 | LENOX | 829J | — | — |
| 413-411 | XXXXXXXXXX | MULT | — | — |
| 413-412 | NORTHADAMS | 4018 | 2016-09-22 | Yes |
| 413-413 | — | — | ||
| 413-414 | HINSDALE | 892D | 2019-10-10 | Yes |
| 413-415 | AMHRSTFKLN | 892D | 2019-10-10 | Yes |
| 413-416 | AMHERST | 892D | 2020-05-28 | Yes |
| 413-417 | SPRINGFLD | 6889 | 2015-01-22 | Yes |
| 413-418 | PITTSFIELD | 671J | — | Yes |
| 413-419 | CHICOPEE | 6889 | 2021-06-29 | Yes |
| 413-420 | HOLYOKE | 829J | — | Yes |
| 413-421 | HOLYOKE | 478J | 2024-03-01 | Yes |
| 413-422 | MILLERSFLS | 9102 | 2002-10-09 | Yes |
| 413-423 | MILLERSFLS | 9102 | 2002-10-09 | Yes |
| 413-424 | MONROE BDG | 9102 | — | Yes |
| 413-425 | HOLYOKE | 829J | — | Yes |
| 413-426 | SPRINGFLD | 9102 | — | Yes |
| 413-427 | HOLYOKE | 6387 | — | — |
| 413-428 | AMHERST | 4036 | 2021-07-30 | Yes |
| 413-429 | GREATBNGTN | 7135 | — | Yes |
| 413-430 | HOLYOKE | 732J | — | Yes |
| 413-431 | LUDLOW | 829J | — | — |
| 413-432 | SPRINGFLD | 478J | 2021-09-29 | Yes |
| 413-433 | SPRINGFLD | 6889 | — | — |
| 413-434 | GILBERTVL | 892D | 2021-01-27 | Yes |
| 413-435 | CHICOPEE | 6889 | 2021-10-07 | Yes |
| 413-436 | WARREN | 9102 | — | Yes |
| 413-437 | HOLYOKE | 829J | — | Yes |
| 413-438 | WILBRAHAM | 990E | 2001-08-10 | Yes |
| 413-439 | SPRINGFLD | 829J | — | Yes |
| 413-440 | HUNTINGTON | 624H | 2020-11-04 | Yes |
| 413-441 | PITTSFIELD | 6387 | — | — |
| 413-442 | PITTSFIELD | 9102 | — | — |
| 413-443 | PITTSFIELD | 9102 | — | — |
| 413-444 | BERNARDSTN | 892D | — | Yes |
| 413-445 | PITTSFIELD | 9102 | — | Yes |
| 413-446 | PITTSFIELD | 4036 | — | — |
| 413-447 | PITTSFIELD | 9102 | — | Yes |
| 413-448 | PITTSFIELD | 9102 | — | Yes |
| 413-449 | PITTSFIELD | 7135 | — | Yes |
| 413-450 | AMHERST | 990E | 2021-10-27 | Yes |
| 413-451 | LONGMEADOW | 829J | — | — |
| 413-452 | SPRINGFLD | 9102 | — | Yes |
| 413-453 | SO DEERFLD | 990E | — | Yes |
| 413-454 | WESTFIELD | 829J | — | Yes |
| 413-455 | SPRINGFLD | 318J | 2003-11-14 | Yes |
| 413-456 | SOUTHWICK | 892D | 2021-11-09 | Yes |
| 413-457 | CHICOPEE | 6889 | 2023-07-06 | Yes |
| 413-458 | WILLIAMSTN | 9102 | — | Yes |
| 413-459 | CHICOPEE | 4018 | — | Yes |
| 413-460 | BELCHERTN | 829J | — | — |
| 413-461 | AMHERST | 4018 | — | Yes |
| 413-462 | SANDISFLD | 793K | 2021-11-22 | Yes |
| 413-463 | SPRINGFLD | 7229 | 2021-12-10 | Yes |
| 413-464 | PITTSFIELD | 793K | 2001-01-22 | Yes |
| 413-465 | HATFIELD | 965H | 2021-04-26 | Yes |
| 413-466 | HOLYOKE | 490J | 2021-12-10 | Yes |
| 413-467 | GRANBY | 0036 | — | — |
| 413-468 | AMHERST | 4036 | 2021-12-29 | Yes |
| 413-469 | AMHRSTFKLN | 4036 | 2021-12-29 | Yes |
| 413-470 | XXXXXXXXXX | 9102 | — | — |
| 413-471 | CHESTERFLD | 4018 | — | Yes |
| 413-472 | HOLYOKE | 6889 | 2022-01-13 | Yes |
| 413-473 | NORTHADAMS | 829J | — | — |
| 413-474 | CHICOPEE | 829J | — | Yes |
| 413-475 | GREENFIELD | 7135 | — | Yes |
| 413-476 | SHEFFIELD | 990E | 2022-01-20 | Yes |
| 413-477 | GILBERTVL | 9102 | — | Yes |
| 413-478 | SPRINGFLD | 6387 | — | — |
| 413-479 | GREENFIELD | 6889 | 2022-01-27 | Yes |
| 413-480 | WESTFIELD | 829J | — | — |
| 413-481 | BRIMFIELD | 892D | 2021-03-25 | Yes |
| 413-482 | SPRINGFLD | 8468 | 2022-03-17 | Yes |
| 413-483 | ADAMS | 892D | 2021-03-25 | Yes |
| 413-484 | PALMER | 892D | 2022-08-05 | Yes |
| 413-485 | WESTFIELD | 829J | — | Yes |
| 413-486 | ELONGMEDOW | 829J | — | Yes |
| 413-487 | WARREN | 829J | — | — |
| 413-488 | BELCHERTN | 892D | 2023-07-28 | Yes |
| 413-489 | SHELBUNFLS | 990E | 2001-07-27 | Yes |
| 413-490 | GREENFIELD | 6387 | 2023-08-10 | Yes |
| 413-491 | CHESTERFLD | 892D | 2021-03-25 | Yes |
| 413-492 | WARE | 6889 | 2023-09-01 | Yes |
| 413-493 | HOLYOKE | 9102 | — | Yes |
| 413-494 | PITTSFIELD | 9102 | — | Yes |
| 413-495 | SPRINGFLD | 829J | — | Yes |
| 413-496 | PITTSFIELD | 9102 | — | Yes |
| 413-497 | GILBERTVL | 4018 | 2001-07-13 | Yes |
| 413-498 | NORTHFIELD | 9102 | — | Yes |
| 413-499 | PITTSFIELD | 9102 | — | — |
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.