NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 951-260

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

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 951-260 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 3
TWC IP ENABLED SERVICES, LLC 2
T-MOBILE USA, INC. 2
UTILITY TELECOM GROUP, LLC - CA 1
ONVOY, LLC - CA 1
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2007-06-08 951-260-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 HEMT HEMT CA
2024-08-19 951-260-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2006-12-18 951-260-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C HEMT HEMT CA
2006-12-05 951-260-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K HEMT HEMT CA
2006-05-12 951-260-4XXX 4000–4999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 HEMT HEMT CA
2014-04-10 951-260-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K HEMT HEMT CA
2006-01-27 951-260-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2006-05-12 951-260-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2006-05-12 951-260-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2006-05-12 951-260-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA

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.