NumberResearchThousands-blocks in 308-999
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 308-999 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 308 blocks
Most active assignees, all time — NPA 308
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 308-999-0XXX | 0000–0999 | Reserved | UNITED STATES CELLULAR - NE | 6263 | HOLDREGE | NE |
| — | 308-999-1XXX | 1000–1999 | Reserved | UNITED STATES CELLULAR - NE | 6263 | HOLDREGE | NE |
| 2022-12-30 | 308-999-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NE | 3233 | HOLDREGE | NE |
| 2018-03-09 | 308-999-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE | 5807 | HOLDREGE | NE |
| 2014-12-03 | 308-999-4XXX | 4000–4999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HOLDREGE | NE |
| 2021-03-03 | 308-999-5XXX | 5000–5999 | Assigned | ONVOY, LLC - NE | 549E | HOLDREGE | NE |
| 2016-03-07 | 308-999-6XXX | 6000–6999 | Assigned | N.E. COLORADO CELLULAR, INC. | 6874 | HOLDREGE | NE |
| 2014-01-22 | 308-999-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE | 5807 | HOLDREGE | NE |
| 2021-03-03 | 308-999-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NE | 549E | HOLDREGE | NE |
| 2011-02-08 | 308-999-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE | 5807 | HOLDREGE | NE |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.