NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2025-10-08 | 562-767 | 0–9 XXXall 10 · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | ALAMITOS | CA |
| 2025-08-05 | 562-820 | 0–9 XXXall 10 · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | ALAMITOS | CA |
| 2023-01-30 | 562-636 | 0–9 XXXall 10 · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | DOWNEY | CA |
| 2015-04-27 | 562-385 | 0–9 XXXall 10 · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | DOWNEY | CA |
| — | 562-240 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | ALAMITOS | CA |
| — | 562-295 | 3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | CMTN CMTN | CA |
| — | 562-308 | 0XXX6XXX7XXX8XXX which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LONG BEACH | CA |
| — | 562-356 | 0XXX7XXX8XXX9XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | NORWALK | CA |
| — | 562-443 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | CMTN CMTN | CA |
| — | 562-478 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | PICORIVERA | CA |
| — | 562-524 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LA HABRA | CA |
| — | 562-551 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | PICORIVERA | CA |
| — | 562-552 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LONG BEACH | CA |
| — | 562-593 | not yet reported which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LAKEWOOD | CA |
| — | 562-608 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LAKEWOOD | CA |
| — | 562-637 | 3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LONG BEACH | CA |
| — | 562-668 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | ALAMITOS | CA |
| — | 562-674 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | DOWNEY | CA |
| — | 562-792 | 8XXX which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | CMTN CMTN | CA |
| — | 562-968 | 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | WHITTIER | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.