All assignees
290 prefixes in 872 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 872-300 | CHICGOZN07 | 6529 | 2023-08-08 | Yes |
| 872-301 | CHICGOZN10 | 6529 | 2013-04-18 | Yes |
| 872-302 | CHICGOZN02 | 224C | 2015-03-13 | Yes |
| 872-303 | CHICGOZN07 | 6529 | 2013-05-24 | Yes |
| 872-304 | CHICGOZN03 | 224C | 2015-12-23 | Yes |
| 872-305 | CHICGOZN03 | 6529 | 2013-05-24 | Yes |
| 872-306 | CHICGOZN09 | 624H | 2022-07-07 | Yes |
| 872-307 | CHICGOZN08 | 6529 | 2014-05-15 | Yes |
| 872-308 | CHICGOZN06 | 6529 | 2015-05-22 | Yes |
| 872-309 | CHICGOZN07 | 224C | 2023-07-13 | Yes |
| 872-310 | CHICGOZN02 | 6529 | 2016-07-12 | Yes |
| 872-311 | XXXXXXXXXX | MULT | — | — |
| 872-312 | CHICGOZN02 | 624H | 2024-03-12 | Yes |
| 872-313 | CHICGOZN08 | 224C | 2021-11-24 | Yes |
| 872-314 | CHICGOZN02 | 984E | 2022-07-22 | Yes |
| 872-315 | CHICGOZN04 | 6529 | 2015-07-21 | Yes |
| 872-316 | CHICGOZN07 | 6333 | 2022-08-05 | Yes |
| 872-317 | CHICGOZN07 | 7136 | 2022-02-17 | Yes |
| 872-318 | CHICGOZN01 | 7136 | 2022-02-11 | Yes |
| 872-319 | CHICGOZN04 | 6529 | 2022-09-15 | Yes |
| 872-320 | CHICGOZN10 | 6534 | 2022-10-03 | Yes |
| 872-321 | CHICGOZN05 | 624H | 2022-10-14 | Yes |
| 872-322 | CHICGOZN06 | 624H | 2022-10-14 | Yes |
| 872-323 | CHICGOZN01 | 7136 | 2022-06-01 | Yes |
| 872-324 | CHICGOZN09 | 939H | 2022-11-09 | Yes |
| 872-325 | CHICGOZN02 | 6529 | 2022-11-21 | Yes |
| 872-326 | CHICGOZN07 | 224C | 2022-11-23 | Yes |
| 872-327 | CHICGOZN04 | 224C | 2022-11-23 | Yes |
| 872-328 | CHICGOZN06 | 6333 | 2023-03-10 | Yes |
| 872-329 | CHICGOZN10 | 7421 | 2023-03-14 | Yes |
| 872-330 | CHICGOZN02 | 616J | 2023-03-14 | Yes |
| 872-331 | CHICGOZN02 | 475J | 2023-07-20 | Yes |
| 872-332 | CHICGOZN02 | 598J | 2023-03-17 | Yes |
| 872-333 | CHICGOZN03 | 6529 | 2010-08-20 | Yes |
| 872-334 | CHICGOZN06 | 516J | 2022-01-27 | Yes |
| 872-335 | CHICGOZN03 | 6534 | 2023-05-01 | Yes |
| 872-336 | CHICGOZN01 | 965H | 2021-10-28 | Yes |
| 872-337 | CHICGOZN05 | 516J | 2022-01-27 | Yes |
| 872-338 | CHICGOZN04 | 6529 | 2023-08-25 | Yes |
| 872-339 | CHICGOZN03 | 6534 | 2023-09-21 | Yes |
| 872-340 | CHICGOZN04 | 395H | 2023-09-27 | Yes |
| 872-341 | CHICGOZN05 | 6534 | 2023-10-05 | Yes |
| 872-342 | CHICGOZN01 | 965H | 2022-03-09 | Yes |
| 872-343 | CHICGOZN07 | 516J | 2022-01-27 | Yes |
| 872-344 | CHICGOZN03 | 224C | 2023-06-21 | Yes |
| 872-345 | CHICGOZN01 | 965H | 2021-01-04 | Yes |
| 872-346 | CHICGOZN04 | 516J | 2022-01-27 | Yes |
| 872-347 | CHICGOZN01 | 0051 | 2023-12-18 | — |
| 872-348 | CHICGOZN08 | 224C | 2017-10-11 | Yes |
| 872-349 | CHICGOZN07 | 224C | 2024-01-03 | Yes |
| 872-350 | CHICGOZN06 | 6529 | 2024-01-04 | Yes |
| 872-351 | CHICGOZN01 | 939H | 2024-01-05 | Yes |
| 872-352 | CHICGOZN09 | 224C | 2023-06-08 | Yes |
| 872-353 | CHICGOZN06 | 939H | 2024-01-05 | Yes |
| 872-354 | CHICGOZN08 | 939H | 2024-01-05 | Yes |
| 872-355 | CHICGOZN01 | 516J | 2022-01-27 | Yes |
| 872-356 | CHICGOZN10 | 224C | 2013-04-11 | Yes |
| 872-357 | CHICGOZN03 | 6534 | 2024-01-17 | Yes |
| 872-358 | CHICGOZN06 | 224C | 2022-11-09 | Yes |
| 872-359 | CHICGOZN10 | 6534 | 2024-02-16 | Yes |
| 872-360 | CHICGOZN09 | 6529 | 2024-03-01 | Yes |
| 872-361 | CHICGOZN05 | 6534 | 2024-03-15 | Yes |
| 872-362 | CHICGOZN05 | 965H | 2020-07-14 | Yes |
| 872-363 | CHICGOZN05 | 224C | 2024-03-15 | Yes |
| 872-364 | CHICGOZN01 | 490J | 2024-03-15 | Yes |
| 872-365 | CHICGOZN02 | 939H | 2017-05-02 | Yes |
| 872-366 | CHICGOZN03 | 224C | 2024-03-27 | Yes |
| 872-367 | CHICGOZN04 | 965H | 2022-03-09 | Yes |
| 872-368 | CHICGOZN09 | 6534 | 2024-04-10 | Yes |
| 872-369 | CHICGOZN04 | 6534 | 2024-04-11 | Yes |
| 872-370 | CHICGOZN08 | 224C | 2024-05-29 | Yes |
| 872-371 | CHICGOZN09 | 6529 | 2024-06-04 | Yes |
| 872-372 | CHICGOZN05 | 224C | 2023-01-13 | Yes |
| 872-373 | CHICGOZN10 | 224C | 2024-06-11 | Yes |
| 872-374 | CHICGOZN02 | 7136 | 2024-02-20 | Yes |
| 872-375 | CHICGOZN04 | 224C | 2024-07-08 | Yes |
| 872-376 | CHICGOZN02 | 224C | 2024-07-08 | Yes |
| 872-377 | CHICGOZN09 | 6529 | 2024-09-10 | Yes |
| 872-378 | CHICGOZN09 | 6534 | 2024-10-30 | Yes |
| 872-379 | CHICGOZN03 | 6534 | 2024-12-19 | Yes |
| 872-380 | CHICGOZN03 | 6534 | 2025-01-10 | Yes |
| 872-381 | CHICGOZN09 | 6534 | 2025-01-10 | Yes |
| 872-382 | CHICGOZN10 | 6534 | 2025-01-13 | Yes |
| 872-383 | CHICGOZN05 | 224C | 2025-02-12 | Yes |
| 872-384 | CHICGOZN02 | 6529 | 2025-05-19 | Yes |
| 872-385 | CHICGOZN09 | 224C | 2025-08-14 | Yes |
| 872-386 | CHICGOZN10 | 6534 | 2025-09-12 | Yes |
| 872-387 | CHICGOZN09 | 224C | 2025-09-22 | Yes |
| 872-388 | CHICGOZN03 | 224C | 2025-09-24 | Yes |
| 872-389 | CHICGOZN04 | 224C | 2025-10-02 | Yes |
| 872-390 | CHICGOZN06 | 224C | 2025-12-18 | Yes |
| 872-391 | CHICGOZN06 | 224C | 2026-01-27 | Yes |
| 872-392 | CHICGOZN08 | 224C | 2026-01-27 | Yes |
| 872-393 | CHICGOZN01 | 224C | 2026-04-08 | Yes |
| 872-394 | CHICGOZN06 | 224C | 2026-08-06 | Yes |
| 872-395 | CHICGOZN10 | 6534 | 2011-07-01 | Yes |
| 872-396 | CHICGOZN09 | 6534 | 2026-09-02 | Yes |
| 872-400 | CHICGOZN03 | 6534 | 2010-12-22 | Yes |
| 872-401 | CHICGOZN07 | 6529 | — | Yes |
| 872-411 | XXXXXXXXXX | MULT | — | — |
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.