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
2007-05-24 951-219-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MURRIETA CA
2007-05-24 951-219-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MURRIETA CA
2007-05-16 951-427-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CORONA CA
2007-05-16 951-427-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CORONA CA
2007-05-15 951-258-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CORONA CA
2007-05-14 951-210-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2007-05-09 951-210-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PERRIS CA
2007-05-04 951-216-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TEMECULA CA
2007-05-04 951-216-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TEMECULA CA
2007-05-04 951-746-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SUN CITY CA
2007-05-04 951-878-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LAKEVIEWNU CA
2007-04-23 951-226-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ELSINORE CA
2007-04-20 951-215-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WOODCREST CA
2007-04-20 951-215-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WOODCREST CA
2007-04-17 951-691-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MURRIETA CA
2007-04-06 951-210-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2007-04-06 951-216-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TEMECULA CA
2007-03-29 951-591-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2007-03-28 951-215-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WOODCREST CA
2007-03-27 951-214-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2007-03-22 951-224-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D RIVERSIDE CA
2007-03-22 951-224-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D RIVERSIDE CA
2007-03-22 951-224-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D RIVERSIDE CA
2007-03-22 951-224-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D RIVERSIDE CA
2007-03-22 951-224-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D RIVERSIDE CA
2007-03-21 951-220-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D CORONA CA
2007-03-21 951-220-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D CORONA CA
2007-03-21 951-220-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D CORONA CA
2007-03-21 951-220-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D CORONA CA
2007-03-21 951-220-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D CORONA CA
2007-03-20 951-219-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MURRIETA CA
2007-03-20 951-219-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MURRIETA CA
2007-03-20 951-219-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MURRIETA CA
2007-03-20 951-977-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLINGTON CA
2007-03-12 951-200-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MURRIETA CA
2007-03-12 951-219-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MURRIETA CA
2007-03-06 951-977-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ARLINGTON CA
2007-03-01 951-213-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K RIVERSIDE CA
2007-02-27 951-200-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MURRIETA CA
2007-02-27 951-240-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TEMECULA CA
2007-02-27 951-327-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HEMT SNJC CA
2007-02-27 951-389-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C HEMT ANZA CA
2007-02-27 951-575-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PERRIS CA
2007-02-27 951-599-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HEMT HMLD CA
2007-02-27 951-692-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HEMT HEMT CA
2007-02-27 951-708-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HEMT SAGE CA
2007-02-27 951-934-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MIRA LOMA CA
2007-02-26 951-216-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J TEMECULA CA
2007-02-26 951-219-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D MURRIETA CA
2007-02-26 951-219-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MURRIETA 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.