All assignees
295 prefixes in 228 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 228-300 | OCEAN SPG | 719E | 2018-05-08 | Yes |
| 228-301 | BILOXI | 6214 | 2024-12-13 | Yes |
| 228-302 | BILOXI | 6214 | 2025-03-14 | Yes |
| 228-303 | BILOXI | 6214 | 2025-04-25 | Yes |
| 228-304 | BAYSTLOUIS | 6396 | — | Yes |
| 228-305 | PEARLINGTN | 6396 | — | Yes |
| 228-306 | BILOXI | 6214 | 2025-04-25 | Yes |
| 228-308 | BILOXI | 597F | 2026-07-22 | Yes |
| 228-311 | XXXXXXXXXX | MULT | — | — |
| 228-312 | PASCAGOULA | 829J | — | — |
| 228-313 | GULFPORT | 6916 | — | — |
| 228-314 | GULFPORT | 5178 | — | Yes |
| 228-323 | GULFPORT | 5562 | — | Yes |
| 228-324 | BILOXI | 6214 | — | — |
| 228-325 | BILOXI | 459H | 2015-03-05 | Yes |
| 228-326 | BILOXI | 6214 | — | — |
| 228-327 | OCEAN SPG | 6214 | — | Yes |
| 228-328 | GULFPORT | 9419 | — | Yes |
| 228-331 | BILOXI | 6214 | 2008-10-03 | Yes |
| 228-332 | PASSCHRSTN | 6214 | — | Yes |
| 228-333 | BILOXI | 965H | 2019-01-22 | Yes |
| 228-334 | OCEAN SPG | 6581 | 2008-01-28 | Yes |
| 228-335 | TANNERWLMS | 719E | 2018-03-01 | Yes |
| 228-336 | MOSS POINT | 965H | 2021-05-25 | Yes |
| 228-337 | BILOXI | 6396 | 2004-03-15 | Yes |
| 228-338 | BILOXI | 321J | 2020-05-28 | Yes |
| 228-339 | BILOXI | 6214 | 2026-02-27 | Yes |
| 228-341 | GULFPORT | 6396 | — | Yes |
| 228-342 | BAYSTLOUIS | 6214 | — | — |
| 228-343 | GULFPORT | 6916 | — | Yes |
| 228-344 | BAYSTLOUIS | 6214 | — | Yes |
| 228-346 | GULFPORT | 508J | 2014-02-10 | Yes |
| 228-348 | BILOXI | 5562 | — | Yes |
| 228-349 | BILOXI | 829J | — | Yes |
| 228-351 | GULFPORT | 4886 | 2014-01-21 | Yes |
| 228-354 | BILOXI | 9419 | — | Yes |
| 228-355 | PASCAGOULA | 6396 | 2003-04-24 | Yes |
| 228-356 | HURLEY | 965H | 2019-10-29 | Yes |
| 228-357 | GULFPORT | 6396 | — | Yes |
| 228-363 | PASSCHRSTN | 6396 | — | Yes |
| 228-364 | PASSCHRSTN | 508J | — | Yes |
| 228-365 | BILOXI | 6396 | — | — |
| 228-366 | PASCAGOULA | 5562 | — | Yes |
| 228-367 | GULFPORT | 719E | — | Yes |
| 228-369 | PASCAGOULA | 6396 | — | Yes |
| 228-372 | PASCAGOULA | 5178 | — | Yes |
| 228-374 | BILOXI | 9419 | — | — |
| 228-376 | BILOXI | 5178 | 2006-04-17 | Yes |
| 228-377 | BILOXI | 5178 | — | Yes |
| 228-380 | GULFPORT | 6396 | — | Yes |
| 228-381 | PASCAGOULA | 6744 | — | Yes |
| 228-382 | OCEAN SPG | 6916 | — | Yes |
| 228-383 | GULFPORT | 6916 | — | — |
| 228-385 | BILOXI | 9419 | — | Yes |
| 228-386 | BILOXI | 9419 | — | Yes |
| 228-387 | BILOXI | 9419 | 2003-03-25 | Yes |
| 228-388 | BILOXI | 9419 | — | — |
| 228-389 | BILOXI | 700J | 2025-12-02 | Yes |
| 228-392 | BILOXI | 9419 | — | — |
| 228-395 | BAYSTLOUIS | 5178 | — | Yes |
| 228-396 | BILOXI | 9419 | — | Yes |
| 228-400 | BILOXI | 719E | 2018-03-02 | Yes |
| 228-407 | PASCAGOULA | 829J | — | Yes |
| 228-411 | XXXXXXXXXX | MULT | — | — |
| 228-422 | PASCAGOULA | 719E | — | Yes |
| 228-424 | BILOXI | 5562 | 2001-03-20 | Yes |
| 228-432 | BILOXI | 9419 | — | Yes |
| 228-435 | BILOXI | 9419 | — | — |
| 228-436 | BILOXI | 9419 | — | — |
| 228-437 | GULFPORT | 6916 | — | Yes |
| 228-438 | BILOXI | 220C | 2012-02-27 | Yes |
| 228-444 | BILOXI | 806K | 2025-09-17 | Yes |
| 228-446 | BILOXI | 992E | 2025-10-01 | Yes |
| 228-447 | OCEAN SPG | 5178 | 2002-04-29 | Yes |
| 228-452 | PASSCHRSTN | 9419 | 2001-05-08 | Yes |
| 228-456 | BILOXI | 829J | 2005-01-14 | Yes |
| 228-460 | MOSS POINT | 829J | — | Yes |
| 228-463 | BAYSTLOUIS | 9419 | — | Yes |
| 228-465 | BILOXI | 6214 | — | Yes |
| 228-466 | BAYSTLOUIS | 9419 | — | Yes |
| 228-467 | BAYSTLOUIS | 9419 | — | — |
| 228-469 | BAYSTLOUIS | 9419 | — | Yes |
| 228-471 | PASCAGOULA | 5178 | 2002-04-29 | Yes |
| 228-474 | MOSS POINT | 9419 | — | — |
| 228-475 | MOSS POINT | 9419 | — | — |
| 228-493 | BAYSTLOUIS | 6581 | — | — |
| 228-497 | PASCAGOULA | 9419 | — | — |
| 228-500 | VANCLEAVE | 883K | 2026-03-18 | Yes |
| 228-511 | XXXXXXXXXX | MULT | — | — |
| 228-518 | GULFPORT | 6744 | — | — |
| 228-522 | PASCAGOULA | 9419 | — | Yes |
| 228-523 | BILOXI | 9419 | — | Yes |
| 228-529 | BILOXI | 939H | 2019-06-14 | Yes |
| 228-533 | PEARLINGTN | 9419 | — | Yes |
| 228-539 | GULFPORT | 9419 | — | — |
| 228-546 | BILOXI | 829J | — | Yes |
| 228-547 | GULFPORT | 6916 | — | Yes |
| 228-549 | PASCAGOULA | 829J | — | Yes |
| 228-555 | DIR ASST | MULT | — | — |
| 228-563 | GULFPORT | 9419 | — | 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.