IP HORIZON LLC
14 prefixes in 831 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 831-221 | SAN ARDO | 515J | — | Yes |
| 831-232 | CHUALAR | 515J | — | Yes |
| 831-237 | SOLEDAD | 515J | — | Yes |
| 831-250 | CARMEL | 515J | — | Yes |
| 831-263 | KING CITY | 515J | — | Yes |
| 831-282 | MONTEREY | 515J | 2021-09-17 | Yes |
| 831-498 | WATSONVL | 515J | — | Yes |
| 831-508 | FELTON | 515J | — | Yes |
| 831-580 | GONZALES | 515J | — | Yes |
| 831-586 | SAN JUAN | 515J | — | Yes |
| 831-607 | APTOS | 515J | — | Yes |
| 831-653 | SAN LUCAS | 515J | — | Yes |
| 831-731 | CASTROVL | 515J | — | Yes |
| 831-996 | TRES PINOS | 515J | — | 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.