All assignees
290 prefixes in 872 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 872-444 | CHICGOZN06 | 516C | 2010-11-09 | Yes |
| 872-453 | CHICGOZN09 | 516J | 2022-01-27 | Yes |
| 872-463 | CHICGOZN10 | 516J | 2022-02-01 | Yes |
| 872-465 | CHICGOZN07 | 224C | 2012-11-19 | Yes |
| 872-469 | CHICGOZN03 | 224C | — | Yes |
| 872-484 | CHICGOZN03 | 6529 | 2011-06-30 | Yes |
| 872-500 | CHICGOZN04 | 883K | 2026-03-24 | Yes |
| 872-511 | XXXXXXXXXX | MULT | — | — |
| 872-529 | CHICGOZN02 | 063E | 2013-12-04 | Yes |
| 872-555 | DIR ASST | MULT | — | — |
| 872-568 | CHICGOZN07 | 516J | 2022-02-18 | Yes |
| 872-587 | CHICGOZN02 | 883K | 2026-01-08 | Yes |
| 872-588 | CHICGOZN04 | 6534 | 2010-08-12 | Yes |
| 872-600 | CHICGOZN03 | 6529 | 2011-03-14 | Yes |
| 872-611 | XXXXXXXXXX | MULT | — | — |
| 872-627 | CHICGOZN02 | 516J | 2022-01-27 | Yes |
| 872-639 | CHICGOZN07 | 224C | 2013-04-11 | Yes |
| 872-664 | CHICGOZN01 | 516J | 2021-04-08 | Yes |
| 872-666 | CHICGOZN09 | 063E | 2010-11-09 | Yes |
| 872-674 | CHICGOZN08 | 516J | 2022-01-27 | Yes |
| 872-678 | CHICGOZN11 | 516J | 2021-02-23 | Yes |
| 872-700 | — | — | ||
| 872-701 | CHICGOZN08 | 6529 | 2013-10-07 | Yes |
| 872-702 | CHICGOZN10 | 6529 | 2013-02-15 | Yes |
| 872-703 | CHICGOZN10 | 6529 | 2013-10-07 | Yes |
| 872-704 | CHICGOZN08 | 984E | 2014-01-16 | Yes |
| 872-706 | CHICGOZN08 | 6529 | 2014-03-17 | Yes |
| 872-707 | CHICGOZN08 | 6529 | 2014-03-17 | Yes |
| 872-710 | CHICGOZN01 | 624H | 2019-09-17 | Yes |
| 872-711 | XXXXXXXXXX | MULT | — | — |
| 872-713 | CHICGOZN04 | 984E | 2014-04-25 | Yes |
| 872-724 | CHICGOZN07 | 6529 | 2015-10-23 | Yes |
| 872-731 | CHICGOZN07 | 6529 | 2014-10-13 | Yes |
| 872-732 | CHICGOZN08 | 965H | 2021-01-19 | Yes |
| 872-757 | CHICGOZN07 | 6529 | 2016-07-13 | Yes |
| 872-758 | CHICGOZN10 | 965H | 2020-07-14 | Yes |
| 872-760 | CHICGOZN10 | 063E | 2016-07-26 | Yes |
| 872-762 | CHICGOZN06 | 063E | 2016-07-27 | Yes |
| 872-763 | CHICGOZN06 | 984E | 2016-07-22 | Yes |
| 872-766 | CHICGOZN01 | 965H | 2020-07-14 | Yes |
| 872-769 | CHICGOZN06 | 6333 | 2016-07-21 | Yes |
| 872-772 | CHICGOZN04 | 6333 | 2015-12-28 | Yes |
| 872-777 | CHICGOZN07 | 063E | 2010-09-14 | Yes |
| 872-799 | CHICGOZN10 | 321J | 2025-09-12 | Yes |
| 872-800 | CHICGOZN03 | 6529 | 2011-05-02 | Yes |
| 872-801 | CHICGOZN08 | 6529 | 2013-05-01 | Yes |
| 872-802 | CHICGOZN04 | 6529 | 2013-09-30 | Yes |
| 872-803 | CHICGOZN10 | 6529 | 2013-05-01 | Yes |
| 872-804 | CHICGOZN02 | 063E | 2016-09-08 | Yes |
| 872-806 | CHICGOZN02 | 6529 | 2013-09-30 | Yes |
| 872-808 | CHICGOZN04 | 6529 | 2013-09-30 | Yes |
| 872-810 | CHICGOZN02 | 984E | 2015-06-12 | Yes |
| 872-811 | XXXXXXXXXX | MULT | — | — |
| 872-813 | CHICGOZN05 | 984E | 2014-09-17 | Yes |
| 872-814 | CHICGOZN04 | 6534 | 2014-10-03 | Yes |
| 872-817 | CHICGOZN04 | 6333 | 2014-09-30 | Yes |
| 872-818 | CHICGOZN07 | 516C | 2014-10-22 | Yes |
| 872-822 | CHICGOZN07 | 5562 | 2021-12-21 | Yes |
| 872-825 | CHICGOZN01 | 9329 | 2009-12-18 | Yes |
| 872-829 | CHICGOZN04 | 224C | 2012-11-19 | Yes |
| 872-835 | CHICGOZN01 | 516J | 2021-05-27 | Yes |
| 872-838 | CHICGOZN05 | 224C | 2017-11-01 | Yes |
| 872-842 | CHICGOZN11 | 965H | 2022-03-09 | Yes |
| 872-843 | CHICGOZN04 | 9329 | 2016-04-07 | Yes |
| 872-844 | CHICGOZN09 | 5562 | 2021-12-21 | Yes |
| 872-855 | CHICGOZN04 | 5562 | 2021-12-21 | Yes |
| 872-867 | CHICGOZN03 | 939H | 2022-04-13 | Yes |
| 872-870 | CHICGOZN09 | 224C | 2017-06-06 | Yes |
| 872-871 | CHICGOZN01 | 5562 | 2021-10-15 | Yes |
| 872-872 | CHICGOZN06 | 224C | 2024-09-17 | Yes |
| 872-873 | CHICGOZN11 | 224C | 2020-05-28 | Yes |
| 872-877 | CHICGOZN04 | 624H | 2021-02-04 | Yes |
| 872-878 | CHICGOZN07 | 490J | 2026-04-01 | Yes |
| 872-880 | CHICGOZN01 | 193E | 2026-09-15 | Yes |
| 872-888 | CHICGOZN02 | 7229 | 2010-09-15 | Yes |
| 872-895 | CHICGOZN01 | 506J | 2020-08-28 | Yes |
| 872-899 | CHICGOZN01 | 965H | 2021-08-18 | Yes |
| 872-900 | CHICGOZN05 | 224C | 2025-12-22 | Yes |
| 872-901 | CHICGOZN07 | 5562 | 2014-10-21 | Yes |
| 872-903 | CHICGOZN09 | 138G | 2015-03-30 | Yes |
| 872-904 | CHICGOZN07 | 6529 | 2015-07-21 | Yes |
| 872-910 | CHICGOZN01 | 224C | 2021-03-17 | Yes |
| 872-911 | XXXXXXXXXX | MULT | — | — |
| 872-946 | CHICGOZN03 | 965H | 2021-10-28 | Yes |
| 872-950 | — | — | ||
| 872-958 | — | — | ||
| 872-959 | — | — | ||
| 872-976 | — | — | ||
| 872-985 | CHICGOZN02 | 138G | 2015-02-13 | Yes |
| 872-999 | CHICGOZN02 | 224C | 2012-12-21 | 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.