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
2005-12-29 951-941-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2005-12-29 951-941-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2005-12-29 951-941-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2005-12-29 951-941-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2005-12-29 951-941-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2005-12-29 951-941-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2005-12-27 951-565-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WOODCREST CA
2005-12-27 951-902-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2005-12-21 951-902-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MORENO CA
2005-12-20 951-527-1XXX 1000–1999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 IDYLLWILD CA
2005-12-19 951-514-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TEMECULA CA
2005-12-19 951-572-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J BANNING CA
2005-12-19 951-760-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TEMECULA CA
2005-12-16 951-310-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CORONA CA
2005-12-16 951-520-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CORONA CA
2005-12-16 951-742-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2005-12-16 951-742-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2005-12-16 951-755-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BANNING CA
2005-12-14 951-796-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2005-12-14 951-796-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2005-12-07 951-710-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLINGTON CA
2005-12-05 951-479-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D CORONA CA
2005-12-05 951-722-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2005-11-30 951-801-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIVERSIDE CA
2005-11-23 951-744-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C HEMT ANZA CA
2005-11-22 951-722-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2005-11-15 951-310-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CORONA CA
2005-11-11 951-801-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J RIVERSIDE CA
2005-11-11 951-801-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J RIVERSIDE CA
2005-11-10 951-602-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ARLINGTON CA
2005-11-10 951-616-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2005-11-10 951-801-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RIVERSIDE CA
2005-11-10 951-801-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RIVERSIDE CA
2005-11-10 951-813-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MURRIETA CA
2005-11-10 951-817-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CORONA CA
2005-11-08 951-325-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HEMT HMLD CA
2005-11-08 951-791-9XXX 9000–9999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HEMT HEMT CA
2005-11-03 951-992-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2005-11-01 951-514-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TEMECULA CA
2005-11-01 951-514-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TEMECULA CA
2005-11-01 951-816-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MURRIETA CA
2005-11-01 951-816-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MURRIETA CA
2005-11-01 951-992-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MORENO CA
2005-11-01 951-992-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MORENO CA
2005-10-28 951-796-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2005-10-28 951-796-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D PERRIS CA
2005-10-13 951-565-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WOODCREST CA
2005-10-13 951-808-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CORONA CA
2005-10-13 951-808-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CORONA CA
2005-10-12 951-722-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PERRIS 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.