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 |
|---|---|---|---|---|---|---|
| 2005-05-31 | 309-885 | 0–9 XXXall 10 · 8 holders which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | PEKIN | IL |
| — | 309-246 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | LACON | IL |
| — | 309-289 | 1XXX which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | KNOXVILLE | IL |
| — | 309-341 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | GALESBURG | IL |
| — | 309-342 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | GALESBURG | IL |
| — | 309-343 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | GALESBURG | IL |
| — | 309-344 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | GALESBURG | IL |
| — | 309-345 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | GALESBURG | IL |
| — | 309-346 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | PEKIN | IL |
| — | 309-347 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | PEKIN | IL |
| — | 309-348 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | SOUTHPEKIN | IL |
| — | 309-352 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | GREEN VLY | IL |
| — | 309-353 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | PEKIN | IL |
| — | 309-375 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | WATAGA | IL |
| — | 309-382 | 8XXX which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | NORTHPEKIN | IL |
| — | 309-465 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | AVON | IL |
| — | 309-477 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | PEKIN | IL |
| — | 309-478 | not yet reported which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | PEKIN | IL |
| — | 309-535 | 6XXX which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | TOPEKA | IL |
| — | 309-543 | 5XXX9XXX · 2 holders which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | HAVANA | IL |
| — | 309-545 | 4XXX which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | TALBOTT | IL |
| — | 309-563 | 8XXX which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | CAMERON | IL |
| — | 309-597 | 8XXX which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | FORESTCITY | IL |
| — | 309-968 | 8XXX which blocks → | BRIGHTSPEED OF ILLINOIS, LLC | 1057 | MANITO | 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.