All assignees
315 prefixes in 551 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 551-200 | JERSEYCITY | 6391 | 2007-01-12 | Yes |
| 551-201 | JERSEYCITY | 637C | 2023-12-11 | Yes |
| 551-202 | CLIFFSIDE | 4036 | 2015-12-30 | Yes |
| 551-203 | JERSEYCITY | 7229 | 2016-03-09 | Yes |
| 551-204 | FAIR LAWN | 6391 | 2014-10-28 | Yes |
| 551-205 | JERSEYCITY | 7142 | 2016-03-14 | Yes |
| 551-206 | FAIR LAWN | 6391 | 2001-12-19 | Yes |
| 551-207 | RAMSEY | 6391 | 2016-04-01 | Yes |
| 551-208 | JERSEYCITY | 4036 | 2002-04-15 | — |
| 551-209 | WYCKOFF | 6623 | 2016-04-01 | Yes |
| 551-210 | DUMONT | 7229 | 2017-06-14 | Yes |
| 551-211 | XXXXXXXXXX | MULT | — | — |
| 551-212 | TEANECK | 4948 | 2017-09-28 | Yes |
| 551-213 | RUTHERFORD | 637C | 2016-05-09 | Yes |
| 551-214 | BAYONNE | 637C | 2015-05-05 | Yes |
| 551-215 | HACKENSACK | 4036 | 2017-10-17 | Yes |
| 551-216 | BAYONNE | 6623 | 2016-11-16 | Yes |
| 551-217 | RAMSEY | 6623 | 2017-03-13 | Yes |
| 551-218 | RAMSEY | 6391 | 2017-12-08 | Yes |
| 551-219 | HACKENSACK | 5562 | 2018-01-26 | Yes |
| 551-220 | JERSEYCITY | 066G | 2015-08-12 | Yes |
| 551-221 | BAYONNE | 6623 | 2002-05-06 | Yes |
| 551-222 | JERSEYCITY | 637C | — | Yes |
| 551-223 | FAIR LAWN | 118F | 2014-04-07 | Yes |
| 551-224 | FAIR LAWN | 637C | 2014-05-19 | Yes |
| 551-225 | JERSEYCITY | 118F | 2014-06-02 | Yes |
| 551-226 | JERSEYCITY | 6391 | 2007-10-17 | Yes |
| 551-227 | JERSEYCITY | 4804 | 2014-06-03 | Yes |
| 551-228 | HACKENSACK | 4948 | 2014-07-01 | Yes |
| 551-229 | JERSEYCITY | 4804 | 2015-07-20 | Yes |
| 551-230 | ENGLEWOOD | 637C | 2018-02-13 | Yes |
| 551-231 | OAKLAND | 118F | 2015-04-16 | Yes |
| 551-232 | BAYONNE | 6623 | 2014-10-01 | Yes |
| 551-233 | JERSEYCITY | 4804 | 2014-10-01 | Yes |
| 551-234 | CLIFFSIDE | 5562 | 2016-09-30 | Yes |
| 551-235 | JERSEYCITY | 6391 | 2014-10-03 | Yes |
| 551-236 | CLOSTER | 6623 | 2014-11-14 | Yes |
| 551-237 | HACKENSACK | 6391 | 2014-11-19 | Yes |
| 551-238 | FAIR LAWN | 6391 | 2014-11-19 | Yes |
| 551-239 | CLIFFSIDE | 637C | 2018-02-27 | Yes |
| 551-240 | UNION CITY | 4036 | 2015-12-30 | Yes |
| 551-241 | BAYONNE | 6623 | 2015-09-08 | Yes |
| 551-242 | CLIFFSIDE | 118F | 2014-12-24 | Yes |
| 551-243 | FAIR LAWN | 6391 | 2015-01-20 | Yes |
| 551-244 | HACKENSACK | 6391 | 2015-08-17 | Yes |
| 551-245 | HACKENSACK | 6391 | 2015-01-20 | Yes |
| 551-246 | FAIR LAWN | 6623 | 2015-01-21 | Yes |
| 551-247 | JERSEYCITY | 118F | 2015-01-29 | Yes |
| 551-248 | CLOSTER | 066G | 2015-08-12 | Yes |
| 551-249 | PARK RIDGE | 637C | 2016-07-11 | Yes |
| 551-250 | FAIR LAWN | 6623 | 2017-01-11 | Yes |
| 551-251 | HACKENSACK | 6391 | 2018-03-22 | Yes |
| 551-252 | RAMSEY | 6391 | 2014-10-09 | Yes |
| 551-253 | KEARNY | 066G | 2015-02-05 | Yes |
| 551-254 | UNION CITY | 6623 | 2015-04-16 | Yes |
| 551-255 | HACKENSACK | 6391 | 2016-02-15 | Yes |
| 551-256 | JERSEYCITY | 7229 | 2015-02-10 | Yes |
| 551-257 | UNION CITY | 6623 | 2014-11-14 | Yes |
| 551-258 | BAYONNE | 118F | 2015-04-16 | Yes |
| 551-259 | HACKENSACK | 4036 | 2018-03-08 | Yes |
| 551-260 | JERSEYCITY | 6623 | 2018-03-28 | Yes |
| 551-261 | JERSEYCITY | 6391 | 2018-05-10 | Yes |
| 551-262 | RAMSEY | 6623 | 2015-02-23 | Yes |
| 551-263 | JERSEYCITY | 6623 | 2015-09-08 | Yes |
| 551-264 | RAMSEY | 2771 | 2015-09-15 | Yes |
| 551-265 | HACKENSACK | 6391 | 2002-08-21 | Yes |
| 551-266 | FAIR LAWN | 6391 | 2018-05-29 | Yes |
| 551-267 | JERSEYCITY | 6391 | 2015-09-15 | Yes |
| 551-268 | UNION CITY | 4036 | 2016-05-17 | Yes |
| 551-269 | RAMSEY | 6391 | 2017-11-14 | Yes |
| 551-270 | RAMSEY | 6391 | 2018-06-04 | Yes |
| 551-271 | BAYONNE | 6623 | 2020-07-29 | Yes |
| 551-272 | LEONIA | 637C | 2016-07-11 | Yes |
| 551-273 | BAYONNE | 637C | 2016-05-27 | Yes |
| 551-274 | KEARNY | 264F | 2016-07-14 | Yes |
| 551-275 | HACKENSACK | 6391 | 2016-07-11 | Yes |
| 551-276 | RIDGEWOOD | 6623 | 2016-09-22 | Yes |
| 551-277 | JERSEYCITY | 637C | 2017-08-22 | Yes |
| 551-278 | ORADELL | 073H | 2016-12-05 | Yes |
| 551-279 | RAMSEY | 5562 | 2018-07-11 | Yes |
| 551-280 | JERSEYCITY | 118F | 2018-06-26 | Yes |
| 551-281 | HACKENSACK | 4036 | 2018-07-11 | Yes |
| 551-282 | WESTWOOD | 118F | 2018-07-30 | Yes |
| 551-283 | HACKENSACK | 4036 | 2017-12-27 | Yes |
| 551-284 | RIDGEWOOD | 637C | 2018-08-16 | Yes |
| 551-285 | RUTHERFORD | 637C | — | Yes |
| 551-286 | HACKENSACK | 4948 | 2018-08-24 | Yes |
| 551-287 | HACKENSACK | 4036 | 2018-09-13 | Yes |
| 551-288 | CLOSTER | 637C | 2020-09-23 | Yes |
| 551-289 | HACKENSACK | 6391 | 2018-01-16 | Yes |
| 551-290 | KEARNY | 4036 | 2020-10-26 | Yes |
| 551-291 | RAMSEY | 5562 | 2018-10-26 | Yes |
| 551-292 | KEARNY | 264F | 2018-11-01 | Yes |
| 551-293 | HACKENSACK | 4036 | 2018-11-07 | Yes |
| 551-294 | RAMSEY | 118F | 2020-12-11 | Yes |
| 551-295 | HACKENSACK | 6623 | 2018-11-26 | Yes |
| 551-296 | OAKLAND | 4804 | 2018-12-12 | Yes |
| 551-297 | BAYONNE | 6623 | 2018-12-19 | Yes |
| 551-298 | JERSEYCITY | 425J | 2019-04-05 | Yes |
| 551-299 | FAIR LAWN | 6623 | 2019-01-15 | 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.