All assignees
125 prefixes in 464 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 464-444 | BEECHER | 965H | 2021-11-02 | Yes |
| 464-511 | XXXXXXXXXX | MULT | — | — |
| 464-529 | CHICAGOHTS | 965H | 2022-03-09 | Yes |
| 464-555 | DIR ASST | MULT | — | — |
| 464-565 | MAYWOOD | 7136 | 2024-02-16 | Yes |
| 464-567 | HARVEY | 7136 | 2022-03-24 | Yes |
| 464-600 | FOREST | 965H | 2021-11-02 | Yes |
| 464-611 | XXXXXXXXXX | MULT | — | — |
| 464-646 | PALOS PARK | 516J | 2022-03-14 | Yes |
| 464-666 | CALUMET CY | 965H | 2021-11-02 | Yes |
| 464-700 | — | — | ||
| 464-711 | XXXXXXXXXX | MULT | — | — |
| 464-733 | BLUEISLAND | 516J | 2022-01-28 | Yes |
| 464-768 | CHICAGOHTS | 516J | 2022-02-01 | Yes |
| 464-777 | WILLOW SPG | 965H | 2021-11-02 | Yes |
| 464-800 | TINLEYPARK | 965H | 2021-11-02 | Yes |
| 464-811 | XXXXXXXXXX | MULT | — | — |
| 464-888 | ORLAND | 965H | 2021-11-02 | Yes |
| 464-911 | XXXXXXXXXX | MULT | — | — |
| 464-927 | CICERO | 516J | 2022-01-25 | Yes |
| 464-950 | — | — | ||
| 464-958 | — | — | ||
| 464-959 | — | — | ||
| 464-976 | — | — | ||
| 464-999 | THORNTON | 965H | 2021-11-04 | 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.