NumberResearchThousands-blocks in 951-572
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 951-572 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 951 blocks
Most active assignees, all time — NPA 951
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-11-27 | 951-572-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BANNING | CA |
| 2006-03-08 | 951-572-1XXX | 1000–1999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BANNING | CA |
| 2008-12-16 | 951-572-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BANNING | CA |
| 2000-12-10 | 951-572-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | BANNING | CA |
| — | 951-572-4XXX | 4000–4999 | Reserved | PACIFIC BELL (COMPETITIVE) | 7480 | BANNING | CA |
| 2004-05-21 | 951-572-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BANNING | CA |
| 2005-12-19 | 951-572-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | BANNING | CA |
| 2025-01-28 | 951-572-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BANNING | CA |
| 2013-03-18 | 951-572-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | BANNING | CA |
| 2012-07-13 | 951-572-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BANNING | CA |
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.