All assignees
315 prefixes in 551 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 551-300 | UNION CITY | 637C | 2018-01-19 | Yes |
| 551-301 | RUTHERFORD | 6623 | 2018-11-26 | Yes |
| 551-302 | HACKENSACK | 6391 | 2019-04-03 | Yes |
| 551-303 | CLOSTER | 6623 | 2019-01-28 | Yes |
| 551-304 | RUTHERFORD | 4036 | — | Yes |
| 551-305 | RIDGEWOOD | 4948 | 2019-07-26 | Yes |
| 551-306 | UNION CITY | 6623 | 2019-08-12 | Yes |
| 551-307 | JERSEYCITY | 5562 | 2020-08-10 | Yes |
| 551-308 | RAMSEY | 4804 | 2018-12-12 | Yes |
| 551-309 | JERSEYCITY | 478J | 2020-10-01 | Yes |
| 551-310 | WESTWOOD | 197D | 2020-07-08 | Yes |
| 551-311 | XXXXXXXXXX | MULT | — | — |
| 551-312 | BAYONNE | 6623 | 2020-11-10 | Yes |
| 551-313 | CLIFFSIDE | 793K | 2014-10-24 | Yes |
| 551-314 | CLIFFSIDE | 482F | 2019-03-20 | Yes |
| 551-315 | RAMSEY | 6391 | 2020-11-24 | Yes |
| 551-316 | CLIFFSIDE | 637C | 2021-01-08 | Yes |
| 551-317 | DUMONT | 637C | 2021-01-27 | Yes |
| 551-318 | BAYONNE | 6623 | 2021-05-05 | Yes |
| 551-319 | WYCKOFF | 637C | 2018-02-15 | Yes |
| 551-320 | RUTHERFORD | 4948 | 2021-05-27 | Yes |
| 551-321 | PARK RIDGE | 637C | 2020-07-22 | Yes |
| 551-322 | TEANECK | 197D | 2021-06-23 | Yes |
| 551-323 | UNION CITY | 6623 | 2021-06-30 | Yes |
| 551-324 | WESTWOOD | 073H | 2021-07-21 | Yes |
| 551-325 | JERSEYCITY | 118F | 2021-07-27 | Yes |
| 551-326 | BAYONNE | 6623 | 2021-08-27 | Yes |
| 551-327 | UNION CITY | 6623 | 2021-08-27 | Yes |
| 551-328 | JERSEYCITY | 6623 | 2021-09-09 | Yes |
| 551-329 | RIDGEWOOD | 939H | 2021-09-23 | Yes |
| 551-330 | CLIFFSIDE | 6623 | 2021-10-06 | Yes |
| 551-331 | UNION CITY | 6623 | 2021-10-06 | Yes |
| 551-332 | BAYONNE | 197D | 2021-10-20 | Yes |
| 551-333 | CLIFFSIDE | 482E | 2008-03-25 | Yes |
| 551-334 | KEARNY | 6623 | 2021-10-27 | Yes |
| 551-335 | HACKENSACK | 6623 | 2021-11-18 | Yes |
| 551-336 | HACKENSACK | 965H | 2020-02-14 | Yes |
| 551-337 | HACKENSACK | 6391 | 2021-11-22 | Yes |
| 551-338 | JERSEYCITY | 6391 | 2021-11-22 | Yes |
| 551-339 | BAYONNE | 6623 | 2021-12-06 | Yes |
| 551-340 | HACKENSACK | 6623 | 2019-01-28 | Yes |
| 551-341 | FAIR LAWN | 6623 | 2021-12-06 | Yes |
| 551-342 | UNION CITY | 6623 | 2021-12-06 | Yes |
| 551-343 | BAYONNE | 6623 | 2022-01-27 | Yes |
| 551-344 | JERSEYCITY | 6623 | 2022-01-27 | Yes |
| 551-345 | HASBROKHTS | 965H | 2020-02-14 | Yes |
| 551-346 | CLOSTER | 6623 | 2022-01-27 | Yes |
| 551-347 | UNION CITY | 6623 | 2022-01-27 | Yes |
| 551-348 | LEONIA | 965H | 2020-10-14 | Yes |
| 551-349 | JERSEYCITY | 6391 | 2022-01-28 | Yes |
| 551-350 | JERSEYCITY | 637C | 2022-06-14 | Yes |
| 551-351 | CRAGMERE | 624H | 2021-01-26 | Yes |
| 551-352 | HACKENSACK | 6391 | 2022-07-08 | Yes |
| 551-353 | JERSEYCITY | 118F | 2022-07-21 | Yes |
| 551-354 | HACKENSACK | 490J | 2022-08-01 | Yes |
| 551-355 | ENGLEWOOD | 637C | 2021-01-26 | Yes |
| 551-356 | KEARNY | 965H | 2020-02-14 | Yes |
| 551-357 | OAKLAND | 637C | 2022-09-02 | Yes |
| 551-358 | JERSEYCITY | 6623 | 2002-04-16 | Yes |
| 551-359 | JERSEYCITY | 6623 | 2022-09-02 | Yes |
| 551-360 | LEONIA | 118F | 2022-09-26 | Yes |
| 551-361 | HACKENSACK | 118F | 2022-10-20 | Yes |
| 551-362 | JERSEYCITY | 6623 | 2022-11-09 | Yes |
| 551-363 | BAYONNE | 732J | 2022-11-14 | Yes |
| 551-364 | BAYONNE | 6623 | 2023-03-23 | Yes |
| 551-365 | KEARNY | 4036 | 2022-12-22 | Yes |
| 551-366 | ENGLEWOOD | 965H | 2021-10-26 | Yes |
| 551-367 | FAIR LAWN | 6391 | 2023-01-09 | Yes |
| 551-368 | HACKENSACK | 6623 | 2023-01-09 | Yes |
| 551-369 | TEANECK | 118F | 2023-01-20 | Yes |
| 551-370 | RIDGEWOOD | 6623 | 2019-01-28 | Yes |
| 551-371 | JERSEYCITY | 732J | 2023-02-09 | Yes |
| 551-372 | KEARNY | 637C | 2023-03-01 | Yes |
| 551-373 | UNION CITY | 637C | 2023-03-14 | Yes |
| 551-374 | DUMONT | 637C | 2023-05-24 | Yes |
| 551-375 | UNION CITY | 6623 | 2023-06-29 | Yes |
| 551-376 | JERSEYCITY | 6623 | 2023-09-11 | Yes |
| 551-377 | UNION CITY | 637C | 2023-09-18 | Yes |
| 551-378 | CLIFFSIDE | 6623 | 2023-09-20 | Yes |
| 551-379 | CLIFFSIDE | 637C | 2023-09-21 | Yes |
| 551-380 | RUTHERFORD | 637C | 2023-09-21 | Yes |
| 551-381 | RUTHERFORD | 637C | 2020-07-22 | Yes |
| 551-382 | ENGLEWOOD | 637C | 2023-09-21 | Yes |
| 551-383 | ORADELL | 637C | 2023-09-21 | Yes |
| 551-384 | UNION CITY | 6623 | 2023-10-11 | Yes |
| 551-385 | WYCKOFF | 4948 | 2023-11-09 | Yes |
| 551-386 | RIDGEWOOD | 4036 | 2023-12-18 | Yes |
| 551-387 | JERSEYCITY | 4948 | 2023-12-07 | Yes |
| 551-388 | BAYONNE | 965H | 2020-10-14 | Yes |
| 551-389 | BAYONNE | 6623 | 2024-01-12 | Yes |
| 551-390 | PARK RIDGE | 637C | 2024-02-16 | Yes |
| 551-391 | TEANECK | 637C | 2024-03-08 | Yes |
| 551-392 | BAYONNE | 6623 | 2024-03-13 | Yes |
| 551-393 | HACKENSACK | 4036 | 2024-05-09 | Yes |
| 551-394 | HASBROKHTS | 637C | 2024-05-15 | Yes |
| 551-395 | CLOSTER | 637C | 2024-05-29 | Yes |
| 551-396 | BAYONNE | 6623 | 2024-06-28 | Yes |
| 551-397 | HACKENSACK | 4036 | 2024-07-30 | Yes |
| 551-398 | WESTWOOD | 637C | 2024-07-31 | Yes |
| 551-399 | BAYONNE | 6623 | 2017-12-15 | 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.