NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

27 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 951
ONVOY, LLC - CA 25
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 1
BANDWIDTH.COM CLEC, 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
2003-11-26 951-413-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2003-11-26 951-486-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2003-11-26 951-492-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2003-11-26 951-602-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ARLINGTON CA
2003-11-25 951-271-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CORONA CA
2003-11-12 951-956-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2003-11-07 951-271-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CORONA CA
2003-11-07 951-367-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2003-11-07 951-367-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2003-11-07 951-965-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2003-11-07 951-965-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2003-11-06 951-306-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2003-11-06 951-306-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2003-11-06 951-306-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2003-11-04 951-294-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D TEMECULA CA
2003-11-04 951-300-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J RIVERSIDE CA
2003-11-04 951-300-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J RIVERSIDE CA
2003-11-04 951-300-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2003-11-04 951-300-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2003-11-04 951-375-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TEMECULA CA
2003-10-31 951-243-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2003-10-31 951-326-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TEMECULA CA
2003-10-31 951-326-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TEMECULA CA
2003-10-31 951-486-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2003-10-31 951-501-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TEMECULA CA
2003-10-29 951-368-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2003-10-29 951-530-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RIVERSIDE CA
2003-10-29 951-609-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ELSINORE CA
2003-10-24 951-837-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MURRIETA CA
2003-10-24 951-837-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MURRIETA CA
2003-10-24 951-956-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2003-10-17 951-271-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J CORONA CA
2003-10-10 951-491-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TEMECULA CA
2003-10-10 951-491-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TEMECULA CA
2003-10-07 951-704-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MURRIETA CA
2003-09-22 951-258-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CORONA CA
2003-09-15 951-325-8XXX 8000–8999Assigned FRONTIER CALIFORNIA INC. 2319 HEMT HMLD CA
2003-09-11 951-491-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J TEMECULA CA
2003-09-11 951-552-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J ARLINGTON CA
2003-09-10 951-479-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CORONA CA
2003-09-09 951-704-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D MURRIETA CA
2003-09-09 951-704-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D MURRIETA CA
2003-09-04 951-294-9XXX 9000–9999Assigned PACIFIC BELL (COMPETITIVE) 7480 TEMECULA CA
2003-09-04 951-750-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2003-09-04 951-782-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2003-09-04 951-894-3XXX 3000–3999Assigned PACIFIC BELL (COMPETITIVE) 7480 MURRIETA CA
2003-09-04 951-956-2XXX 2000–2999Assigned PACIFIC BELL (COMPETITIVE) 7480 PERRIS CA
2003-09-04 951-965-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2003-09-03 951-491-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J TEMECULA CA
2003-09-03 951-571-9XXX 9000–9999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MORENO 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.