IP HORIZON LLC
4 prefixes in 656 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 656-258 | TAMPACEN | 515J | 2025-04-30 | Yes |
| 656-259 | TAMPANTH | 515J | 2025-04-30 | Yes |
| 656-260 | TAMPASTH | 515J | 2025-04-30 | Yes |
| 656-261 | ZEPHYRHILS | 515J | 2025-04-30 | 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.