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 |
|---|---|---|---|---|---|---|
| 2022-03-10 | 719-699 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SALIDA | CO |
| 2022-03-03 | 719-872 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | DEL NORTE | CO |
| 2022-03-03 | 719-968 | 2XXX7XXX8XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ANTONITO | CO |
| 2022-02-25 | 719-773 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ROCKY FORD | CO |
| 2022-02-25 | 719-993 | 0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | AGUILAR | CO |
| 2022-02-24 | 719-995 | 0XXX5XXX8XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | WALSH | CO |
| 2022-02-24 | 719-996 | 0XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | WESTCLIFFE | CO |
| 2022-02-18 | 719-933 | 3XXX8XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SIMLA | CO |
| 2022-02-18 | 719-997 | 0XXX1XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SAN LUIS | CO |
| 2022-02-17 | 719-673 | 0XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | HOLLY | CO |
| 2022-02-17 | 719-788 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ORDWAY | CO |
| 2022-02-17 | 719-926 | 0XXX1XXX6XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SAGUACHE | CO |
| 2022-02-17 | 719-932 | 0XXX7XXX8XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | LA VETA | CO |
| 2022-02-10 | 719-736 | 8XXX which blocks → | TON80 COMMUNICATIONS, LLC | 516J | HARTSEL | CO |
| 2022-02-04 | 719-724 | 0XXX3XXX6XXX7XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | GARDNER | CO |
| 2022-02-04 | 719-786 | 0XXX5XXX7XXX8XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CREEDE | CO |
| 2022-02-04 | 719-842 | 0–9 XXXall 10 · 7 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | FLORENCE | CO |
| 2022-01-20 | 719-732 | 0XXX1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CHEYENWLLS | CO |
| 2022-01-13 | 719-737 | 0XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CAMPO | CO |
| 2022-01-13 | 719-762 | 0XXX1XXX2XXX4XXX7XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | BRISTOGRND | CO |
| 2022-01-13 | 719-998 | 0XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CHERAW | CO |
| 2022-01-11 | 719-832 | 6XXX7XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | AGATE | CO |
| 2020-11-10 | 719-934 | 0–9 XXXall 10 · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | PUEBLO | CO |
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.