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 |
|---|---|---|---|---|---|---|
| 2022-03-04 | 575-757 | 0XXX5XXX7XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SOCORRO | NM |
| 2022-03-03 | 575-299 | 0–9 XXXall 10 · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | DEMING | NM |
| 2022-03-03 | 575-966 | 0XXX1XXX6XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | LA MESA | NM |
| 2022-03-01 | 575-599 | 0XXX1XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | RED RIVER | NM |
| 2022-03-01 | 575-916 | 8XXX which blocks → | TON80 COMMUNICATIONS, LLC | 516J | GALLINA | NM |
| 2022-02-24 | 575-688 | 0XXX6XXX8XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CRLSBACRNS | NM |
| 2022-02-24 | 575-722 | 2XXX7XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CANJILON | NM |
| 2022-02-24 | 575-788 | 0–9 XXXall 10 · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | BAYARD | NM |
| 2022-02-02 | 575-463 | 0–9 XXXall 10 · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | LAS CRUCES | NM |
| 2022-01-14 | 575-327 | 0XXX6XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CUBA | NM |
| 2022-01-14 | 575-467 | 0XXX1XXX2XXX8XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ANGEL FIRE | NM |
| 2022-01-11 | 575-293 | 0–9 XXXall 10 · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | PENASCO | NM |
| 2022-01-11 | 575-426 | 0XXX1XXX3XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SPRINGER | NM |
| 2022-01-11 | 575-466 | 3XXX6XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | JEMEZ SPG | NM |
| 2022-01-11 | 575-663 | 0XXX1XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SAN YSIDRO | NM |
| 2022-01-10 | 575-832 | 0XXX1XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | TUCUMCARI | NM |
| 2021-04-06 | 575-837 | 0–9 XXXall 10 · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ALAMOGORDO | NM |
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.