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 |
|---|---|---|---|---|---|---|
| 2022-03-02 | 458-625 | 5XXX6XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | BONANZA | OR |
| 2022-03-02 | 458-886 | 5XXX6XXX8XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | BLY | OR |
| 2022-02-25 | 458-466 | 1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | BANDON | OR |
| 2022-02-23 | 458-582 | 0XXX1XXX7XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | AZALEA | OR |
| 2022-02-23 | 458-763 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ASHLAND | OR |
| 2022-02-23 | 458-783 | 1XXX7XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | DEPOE BAY | OR |
| 2022-02-18 | 458-832 | 0XXX2XXX4XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | PARKDALE | OR |
| 2022-02-18 | 458-846 | 1XXX6XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SO HARNEY | OR |
| 2022-02-15 | 458-624 | 5XXX7XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | NO POWDER | OR |
| 2022-02-15 | 458-687 | 1XXX7XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MORO | OR |
| 2022-02-15 | 458-726 | 5XXX7XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MONUMENT | OR |
| 2022-02-15 | 458-742 | 1XXX6XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | NO HARNEY | OR |
| 2022-02-14 | 458-837 | 1XXX4XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MITCHELL | OR |
| 2022-02-09 | 458-463 | 7XXX which blocks → | TON80 COMMUNICATIONS, LLC | 516J | JOSEPH | OR |
| 2022-02-09 | 458-632 | 7XXX8XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | IONE | OR |
| 2022-02-07 | 458-746 | 0XXX1XXX2XXX3XXX4XXX7XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | GRASS VLY | OR |
| 2022-02-07 | 458-787 | 0XXX1XXX7XXX8XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | HEPPNER | OR |
| 2022-02-04 | 458-987 | 1XXX9XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | GILCHRIST | OR |
| 2022-02-01 | 458-646 | 0XXX2XXX4XXX6XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CASCADELKS | OR |
| 2022-02-01 | 458-723 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | BURNS | OR |
| 2022-01-26 | 458-433 | 0XXX6XXX7XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | VALE | OR |
| 2021-02-09 | 458-836 | 0–9 XXXall 10 · 6 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | BEND | OR |
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.