All assignees
646 prefixes in 413 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 413-300 | DALTON | 793K | 2010-10-08 | Yes |
| 413-301 | SPRINGFLD | 4036 | 2004-12-02 | Yes |
| 413-302 | SPRINGFLD | 6387 | 2012-10-24 | Yes |
| 413-303 | EASTHAMPTN | 829J | 2001-06-04 | Yes |
| 413-304 | SPRINGFLD | 829J | — | Yes |
| 413-305 | SOUTHWICK | 7135 | 2019-03-26 | Yes |
| 413-306 | SPRINGFLD | 4018 | 2002-05-08 | Yes |
| 413-307 | ADAMS | 7421 | 2012-06-11 | Yes |
| 413-308 | LUDLOW | 7103 | 2001-07-10 | Yes |
| 413-309 | SPRINGFLD | 6889 | 2013-03-29 | Yes |
| 413-310 | SPRINGFLD | 6889 | 2014-02-26 | Yes |
| 413-311 | XXXXXXXXXX | MULT | — | — |
| 413-312 | SPRINGFLD | 114J | 2019-08-27 | Yes |
| 413-313 | HOLYOKE | 829J | 2001-05-21 | Yes |
| 413-314 | SPRINGFLD | 892D | 2009-12-28 | Yes |
| 413-315 | HOLYOKE | 829J | — | Yes |
| 413-316 | SPRINGFLD | 6387 | 2014-05-22 | Yes |
| 413-317 | SPRINGFLD | 6889 | 2013-10-16 | Yes |
| 413-318 | ELONGMEDOW | 829J | — | Yes |
| 413-319 | HOLYOKE | 892D | 2018-02-05 | Yes |
| 413-320 | NORTHAMPTN | 4018 | 2001-01-22 | Yes |
| 413-321 | WARE | 6889 | 2019-09-12 | Yes |
| 413-322 | HOLYOKE | 9102 | — | Yes |
| 413-323 | BELCHERTN | 9102 | — | Yes |
| 413-324 | PALMER | 7103 | — | Yes |
| 413-325 | GREENFIELD | 7135 | — | Yes |
| 413-326 | NORTHAMPTN | 5562 | — | Yes |
| 413-327 | LEE | 990E | 2001-06-27 | Yes |
| 413-328 | SPRINGFLD | 829J | — | Yes |
| 413-329 | PITTSFIELD | 4036 | — | — |
| 413-330 | SPRINGFLD | 6889 | — | — |
| 413-331 | CHICOPEE | 792K | 2005-10-06 | Yes |
| 413-332 | LENOX | 829J | — | Yes |
| 413-333 | SPRINGFLD | 892D | — | Yes |
| 413-334 | SPRINGFLD | 073H | 2019-11-20 | Yes |
| 413-335 | HOLYOKE | 6387 | — | — |
| 413-336 | AMHRSTFKLN | 4036 | 2008-10-10 | Yes |
| 413-337 | CHARLEMONT | 9102 | — | Yes |
| 413-338 | WARREN | 4018 | 2001-07-13 | Yes |
| 413-339 | CHARLEMONT | 9102 | — | Yes |
| 413-340 | WILLIAMSBG | 4018 | 2008-09-15 | Yes |
| 413-341 | NORTHAMPTN | 4018 | — | Yes |
| 413-342 | SPRINGFLD | 990E | 2008-06-10 | Yes |
| 413-343 | CHESTER | 197D | 2018-03-06 | Yes |
| 413-344 | PITTSFIELD | 793K | 2010-09-30 | Yes |
| 413-345 | AMHERST | 6387 | 2009-05-11 | Yes |
| 413-346 | NORTHADAMS | 829J | — | Yes |
| 413-347 | PITTSFIELD | 5562 | 2004-08-16 | Yes |
| 413-348 | SPRINGFLD | 6387 | — | — |
| 413-349 | HATFIELD | 4018 | 2004-08-13 | Yes |
| 413-350 | SO DEERFLD | 7135 | 2009-05-15 | Yes |
| 413-351 | SPRINGFLD | 6387 | — | Yes |
| 413-352 | SPRINGFLD | 671J | 2022-11-17 | Yes |
| 413-353 | HOUSATONIC | 990E | — | Yes |
| 413-354 | CHESTER | 9102 | — | Yes |
| 413-355 | SPRINGFLD | 6387 | 2010-05-13 | Yes |
| 413-356 | CHICOPEE | 4036 | — | Yes |
| 413-357 | GRANVILLE | 9102 | — | Yes |
| 413-358 | PITTSFIELD | 829J | — | Yes |
| 413-359 | COLRAIN | 990E | 2010-02-09 | Yes |
| 413-360 | SANDISFLD | 892D | 2018-06-25 | Yes |
| 413-361 | SPRINGFLD | 425J | 2020-02-19 | Yes |
| 413-362 | AMHERST | 7103 | — | Yes |
| 413-363 | SPRINGFLD | 318J | — | Yes |
| 413-364 | SPRINGFLD | 6889 | — | — |
| 413-365 | PITTSFIELD | 9102 | 2009-09-15 | Yes |
| 413-366 | WILBRAHAM | 829J | 2001-05-21 | Yes |
| 413-367 | MONTAGUE | 9102 | — | Yes |
| 413-368 | SPRINGFLD | 116E | 2020-03-25 | Yes |
| 413-369 | CONWAY | 9102 | — | Yes |
| 413-370 | PALMER | 515J | — | Yes |
| 413-371 | BELCHERTN | 892D | 2019-07-19 | Yes |
| 413-372 | SPRINGFLD | 829J | 2012-09-04 | Yes |
| 413-373 | CUMMINGTON | 318J | 2019-10-09 | Yes |
| 413-374 | SPRINGFLD | 6387 | — | — |
| 413-375 | HAMPDEN | 829J | — | — |
| 413-376 | GREENFIELD | 829J | — | Yes |
| 413-377 | CHICOPEE | 7103 | — | Yes |
| 413-378 | CHICOPEE | 9102 | — | Yes |
| 413-379 | AMHERST | 4036 | 2020-04-06 | Yes |
| 413-380 | RICHMOND | 793K | 2020-06-11 | Yes |
| 413-381 | SPRINGFLD | 506J | 2020-10-22 | Yes |
| 413-382 | SPRINGFLD | 829J | — | — |
| 413-383 | LEE | 829J | — | — |
| 413-384 | LONGMEADOW | 829J | 2001-05-21 | Yes |
| 413-385 | LUDLOW | 829J | — | Yes |
| 413-386 | SPRINGFLD | 6889 | — | Yes |
| 413-387 | NORTHAMPTN | 829J | — | Yes |
| 413-388 | CHICOPEE | 4036 | 2002-07-22 | Yes |
| 413-389 | SPRINGFLD | 515J | 2020-09-08 | Yes |
| 413-390 | SPRINGFLD | 268F | 2021-01-25 | Yes |
| 413-391 | SPRINGFLD | 316E | 2008-01-02 | Yes |
| 413-392 | NORTHFIELD | 624H | 2021-02-03 | Yes |
| 413-393 | WESTFIELD | 495J | 2021-03-05 | Yes |
| 413-394 | LEE | 9102 | — | Yes |
| 413-395 | PITTSFIELD | 9102 | — | Yes |
| 413-396 | — | — | ||
| 413-397 | SO DEERFLD | 9102 | — | Yes |
| 413-398 | NORTHADAMS | 829J | — | Yes |
| 413-399 | AMHERST | 4036 | 2021-04-17 | 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.