All assignees
14 prefixes in 357 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 357-211 | XXXXXXXXXX | MULT | — | — |
| 357-311 | XXXXXXXXXX | MULT | — | — |
| 357-411 | XXXXXXXXXX | MULT | — | — |
| 357-511 | XXXXXXXXXX | MULT | — | — |
| 357-555 | DIR ASST | MULT | — | — |
| 357-611 | XXXXXXXXXX | MULT | — | — |
| 357-700 | XXXXXXXXXX | MULT | — | — |
| 357-711 | XXXXXXXXXX | MULT | — | — |
| 357-811 | XXXXXXXXXX | MULT | — | — |
| 357-911 | XXXXXXXXXX | MULT | — | — |
| 357-950 | XXXXXXXXXX | MULT | — | — |
| 357-958 | XXXXXXXXXX | MULT | — | — |
| 357-959 | XXXXXXXXXX | MULT | — | — |
| 357-976 | 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.