NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026
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 |
|---|---|---|---|---|---|---|
| — | 308-220 | 1XXX8XXX9XXX · 3 holders which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | SCOTSBLUFF | NE |
| — | 308-235 | none assigned yet which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | KIMBALL | NE |
| — | 308-247 | not yet reported which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | MORRILL | NE |
| — | 308-436 | not yet reported which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | GERING | NE |
| — | 308-489 | 6XXX7XXX · 2 holders which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | BROADWATER | NE |
| — | 308-586 | not yet reported which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | BAYARD | NE |
| — | 308-623 | not yet reported which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | MITCHELL | NE |
| — | 308-630 | not yet reported which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | SCOTSBLUFF | NE |
| — | 308-632 | not yet reported which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | SCOTSBLUFF | NE |
| — | 308-635 | not yet reported which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | SCOTSBLUFF | NE |
| — | 308-772 | 7XXX which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | OSHKOSH | NE |
| — | 308-778 | 1XXX2XXX · 2 holders which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | LEWELLEN | NE |
| — | 308-783 | 8XXX which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | MINATARE | NE |
| — | 308-787 | none assigned yet which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | LYMAN | NE |
| — | 308-874 | none assigned yet which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | CHAPPELL | NE |
| — | 308-879 | 8XXX which blocks → | UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE | 4530 | POTTER | NE |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.