NumberResearchThousands-blocks in 251-241
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 251-241 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 251-241-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | BREWTON | AL |
| — | 251-241-1XXX | 1000–1999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | BREWTON | AL |
| 2013-06-27 | 251-241-2XXX | 2000–2999 | Assigned | TELEPAK NETWORKS, INC. - AL | 947G | BREWTON | AL |
| 2013-11-08 | 251-241-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | BREWTON | AL |
| — | 251-241-4XXX | 4000–4999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | BREWTON | AL |
| 2016-02-04 | 251-241-5XXX | 5000–5999 | Assigned | ONVOY, LLC - AL | 604E | BREWTON | AL |
| 2013-05-08 | 251-241-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - AL | 8271 | BREWTON | AL |
| 2014-04-03 | 251-241-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | BREWTON | AL |
| 2016-02-04 | 251-241-8XXX | 8000–8999 | Assigned | ONVOY, LLC - AL | 604E | BREWTON | AL |
| 2009-01-12 | 251-241-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | BREWTON | AL |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.