NumberResearchThousands-blocks in 251-776
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 251-776 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 251 blocks
Most active assignees, all time — NPA 251
New assignments by month
Sep 2026
Aug 2026
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Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-06-15 | 251-776-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | 6804 | MOBILE | AL |
| — | 251-776-1XXX | 1000–1999 | Reserved | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MOBILE | AL |
| 2004-09-10 | 251-776-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | 6804 | MOBILE | AL |
| 2005-04-18 | 251-776-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | 6804 | MOBILE | AL |
| 2004-10-11 | 251-776-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | 6804 | MOBILE | AL |
| — | 251-776-5XXX | 5000–5999 | Reserved | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MOBILE | AL |
| — | 251-776-6XXX | 6000–6999 | Reserved | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MOBILE | AL |
| — | 251-776-7XXX | 7000–7999 | Reserved | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MOBILE | AL |
| 2004-11-08 | 251-776-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | 6804 | MOBILE | AL |
| 2016-02-18 | 251-776-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | MOBILE | AL |
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.