All assignees
110 prefixes in 351 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 351-200 | ASHBY | 7135 | 2018-05-15 | Yes |
| 351-201 | DANVERS | 6889 | — | Yes |
| 351-202 | PEPPERELL | 268F | 2012-08-29 | Yes |
| 351-203 | TYNGSBORO | 990E | 2019-05-16 | Yes |
| 351-204 | LAWRENCE | 5562 | 2018-06-25 | Yes |
| 351-205 | GEORGETOWN | 268F | 2012-08-29 | Yes |
| 351-206 | ROCKPORT | 268F | 2013-01-08 | Yes |
| 351-207 | GEORGETOWN | 318J | 2014-05-12 | Yes |
| 351-208 | LOWELL | 6387 | 2018-07-12 | Yes |
| 351-209 | ACTON | 114J | 2019-02-21 | Yes |
| 351-210 | HUDSON | 6889 | — | Yes |
| 351-211 | XXXXXXXXXX | MULT | — | — |
| 351-212 | DANVERS | 6387 | 2019-04-04 | Yes |
| 351-213 | TEMPLETON | 892D | — | Yes |
| 351-214 | ROCKPORT | 197D | 2019-10-08 | Yes |
| 351-215 | HAVERHILL | 4036 | 2019-11-29 | Yes |
| 351-216 | HAMILTON | 4036 | 2020-06-09 | Yes |
| 351-217 | GLOUCESTER | 6889 | 2021-02-24 | Yes |
| 351-218 | ACTON | 6889 | 2021-04-08 | Yes |
| 351-219 | DANVERS | 318J | 2021-08-18 | Yes |
| 351-220 | ACTON | 6889 | 2021-12-03 | Yes |
| 351-221 | LOWELL | 939H | 2021-09-17 | Yes |
| 351-222 | MERRIMAC | 892D | 2019-10-10 | Yes |
| 351-223 | BEVERLY | 892D | 2021-06-14 | Yes |
| 351-224 | BARRE | 892D | 2021-07-16 | Yes |
| 351-225 | BERLIN | 892D | 2021-07-20 | Yes |
| 351-226 | WESTFORD | 598J | — | Yes |
| 351-227 | BOLTON | 892D | 2021-11-09 | Yes |
| 351-228 | ANDOVER | 990E | 2021-12-03 | Yes |
| 351-229 | AMESBURY | 990E | 2022-01-27 | Yes |
| 351-230 | LEOMINSTER | 5562 | 2022-02-11 | Yes |
| 351-231 | GLOUCESTER | 6889 | 2022-03-18 | Yes |
| 351-232 | TYNGSBORO | 892D | 2022-10-04 | Yes |
| 351-233 | ASHBURNHAM | 516J | 2022-02-16 | Yes |
| 351-234 | HAVERHILL | 965H | 2021-07-23 | Yes |
| 351-235 | ACTON | 6889 | — | Yes |
| 351-236 | NEWBURYPT | 229C | 2023-01-04 | Yes |
| 351-237 | TEMPLETON | 6889 | 2023-01-09 | Yes |
| 351-238 | ORANGE | 490J | 2023-02-08 | Yes |
| 351-239 | LOWELL | 6387 | 2023-02-21 | Yes |
| 351-240 | LAWRENCE | 892D | 2023-08-16 | Yes |
| 351-241 | HAMILTON | 892D | 2023-08-23 | Yes |
| 351-242 | FITCHBURG | 892D | 2023-06-05 | Yes |
| 351-243 | WESTFORD | 7421 | 2023-09-29 | Yes |
| 351-244 | ACTON | 6387 | 2024-05-28 | Yes |
| 351-245 | ACTON | 6889 | — | Yes |
| 351-246 | SALEM | 0051 | 2026-05-04 | — |
| 351-247 | LUNENBURG | 7135 | 2019-03-26 | Yes |
| 351-251 | GROTON | 892D | 2021-04-01 | Yes |
| 351-252 | ROWLEY | 892D | 2021-06-14 | Yes |
| 351-253 | ATHOLFKLN | 892D | 2021-04-01 | Yes |
| 351-266 | PRINCETON | 516J | 2022-02-16 | Yes |
| 351-277 | LAWRENCE | 6889 | 2017-04-07 | Yes |
| 351-300 | HARVARD | 892D | 2019-10-10 | Yes |
| 351-311 | XXXXXXXXXX | MULT | — | — |
| 351-322 | LOWELL | 6889 | 2017-03-13 | Yes |
| 351-333 | HARVARD | 892D | — | Yes |
| 351-344 | GLOUCESTER | 892D | 2021-12-21 | Yes |
| 351-345 | HUDSON | 965H | 2021-04-26 | Yes |
| 351-350 | IPSWICH | 5562 | 2021-12-20 | Yes |
| 351-351 | LAWRENCE | 125L | 2025-03-04 | Yes |
| 351-352 | GEORGETOWN | 624H | 2021-03-17 | Yes |
| 351-353 | HAVERHILL | 892D | 2021-04-01 | Yes |
| 351-354 | LUNENBURG | 892D | 2021-04-01 | Yes |
| 351-355 | AMESBURY | 624H | 2021-03-17 | Yes |
| 351-356 | LEOMINSTER | 965H | 2020-07-21 | Yes |
| 351-357 | ORANGE | 892D | 2021-04-01 | Yes |
| 351-358 | PEPPERELL | 892D | 2021-04-01 | Yes |
| 351-359 | SHIRLEY | 892D | 2021-04-01 | Yes |
| 351-361 | ASHBY | 624H | 2021-03-17 | Yes |
| 351-371 | WESTMINSTR | 892D | 2021-04-01 | Yes |
| 351-377 | PEABODY | 892D | 2021-12-21 | Yes |
| 351-388 | HARVARD | 624H | 2021-03-17 | Yes |
| 351-400 | ESSEX | 965H | 2020-05-08 | Yes |
| 351-411 | XXXXXXXXXX | MULT | — | — |
| 351-426 | DANVERS | 516J | 2022-02-16 | Yes |
| 351-444 | IPSWICH | 892D | — | Yes |
| 351-465 | MANCHESTER | 965H | 2021-04-26 | Yes |
| 351-500 | LOWELL | 965H | 2020-05-08 | Yes |
| 351-501 | HUBBARDSTN | 624H | 2021-03-17 | Yes |
| 351-511 | XXXXXXXXXX | MULT | — | — |
| 351-529 | MERRIMAC | 965H | 2020-05-08 | Yes |
| 351-550 | CLINTON | 939H | 2023-09-26 | Yes |
| 351-554 | XXXXXXXXXX | 9102 | — | — |
| 351-555 | DIR ASST | MULT | — | — |
| 351-588 | HAVERHILL | 516J | 2022-02-17 | Yes |
| 351-600 | PEABODY | 965H | 2020-05-08 | Yes |
| 351-611 | XXXXXXXXXX | MULT | — | — |
| 351-666 | PEABODY | 892D | 2017-09-26 | Yes |
| 351-667 | ACTON | 965H | 2021-10-22 | Yes |
| 351-688 | GEORGETOWN | 516J | 2022-01-07 | Yes |
| 351-700 | — | — | ||
| 351-711 | XXXXXXXXXX | MULT | — | — |
| 351-746 | WINCHENDON | 516J | 2022-02-11 | Yes |
| 351-777 | HUBBARDSTN | 892D | — | Yes |
| 351-800 | WINCHENDON | 965H | 2020-05-08 | Yes |
| 351-811 | XXXXXXXXXX | MULT | — | — |
| 351-814 | XXXXXXXXXX | 9102 | — | — |
| 351-837 | ASHBY | 516J | 2022-01-06 | Yes |
| 351-888 | MERRIMAC | 892D | — | 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.