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 |
|---|---|---|---|---|---|---|
| 2008-03-05 | 308-629 | 1XXX2XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | ALLIANCE | NE |
| 2005-11-08 | 308-353 | 3XXX5XXX7XXX · 2 holders which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | GRANT | NE |
| 2005-04-23 | 308-883 | not yet reported which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | IMPERIAL | NE |
| 2005-04-22 | 308-770 | not yet reported which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | OSHKOSH | NE |
| 2004-10-13 | 308-225 | 0–9 XXXall 10 · 5 holders which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | SCOTSBLUFF | NE |
| 2004-09-07 | 308-890 | not yet reported which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | CHAPPELL | NE |
| 2004-08-23 | 308-230 | 0–9 XXXall 10 · 6 holders which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | KIMBALL | NE |
| 2004-04-08 | 308-207 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | CHADRON | NE |
| 2003-10-24 | 308-250 | not yet reported which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | SIDNEY | NE |
| — | 308-240 | not yet reported which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | KEARNEY | NE |
| — | 308-370 | not yet reported which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | GRAND IS | NE |
| — | 308-464 | not yet reported which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | OGALLALA | NE |
| — | 308-637 | not yet reported which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | SCOTSBLUFF | NE |
| — | 308-640 | not yet reported which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | GOTHENBURG | NE |
| — | 308-650 | not yet reported which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | NO PLATTE | NE |
| — | 308-651 | not yet reported which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | LEXINGTON | NE |
| — | 308-947 | not yet reported which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | CENTRAL CY | NE |
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.