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 |
|---|---|---|---|---|---|---|
| 2022-03-23 | 779-463 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MORRIS | IL |
| 2022-02-23 | 779-625 | 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | WOODSTOCK | IL |
| 2022-01-26 | 779-466 | 3XXX4XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | EMINGTON | IL |
| 2022-01-13 | 779-426 | 0XXX1XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MANHATTAN | IL |
| 2022-01-13 | 779-624 | 0–9 XXXall 10 · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MOMENCE | IL |
| 2022-01-13 | 779-639 | 0–9 XXXall 10 · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MCHENRY | IL |
| 2022-01-13 | 779-675 | 0XXX3XXX5XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | OHIO | IL |
| 2022-01-13 | 779-746 | 0XXX6XXX7XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CISSNAPARK | IL |
| 2022-01-13 | 779-783 | 0XXX6XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | STOCKLAND | IL |
| 2022-01-13 | 779-832 | 0XXX2XXX4XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CEDARPOINT | IL |
| 2022-01-13 | 779-927 | 0XXX1XXX3XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MARENGO | IL |
| 2022-01-13 | 779-997 | 0XXX2XXX7XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | PLATTVILLE | IL |
| 2022-01-07 | 779-837 | 0XXX1XXX2XXX3XXX4XXX5XXX · 6 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ELWOOD | IL |
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.