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
2022-06-10 951-610-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PERRIS CA
2022-06-10 951-622-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MIRA LOMA CA
2022-06-10 951-875-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BANNING CA
2022-06-03 951-606-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SUN CITY CA
2022-06-03 951-723-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SUN CITY CA
2022-05-31 951-593-3XXX 3000–3999Assigned BARR TELL USA, LLC 026K HEMT HEMT CA
2022-05-31 951-594-4XXX 4000–4999Assigned BARR TELL USA, LLC 026K MORENO CA
2022-05-31 951-597-1XXX 1000–1999Assigned BARR TELL USA, LLC 026K CORONA CA
2022-05-31 951-610-1XXX 1000–1999Assigned BARR TELL USA, LLC 026K PERRIS CA
2022-05-31 951-848-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2022-05-31 951-942-9XXX 9000–9999Assigned BARR TELL USA, LLC 026K MURRIETA CA
2022-05-17 951-610-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2022-05-17 951-610-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2022-05-17 951-610-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2022-05-13 951-594-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2022-05-13 951-594-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2022-05-12 951-592-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H RIVERSIDE CA
2022-05-12 951-592-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H RIVERSIDE CA
2022-05-11 951-590-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C HEMT HEMT CA
2022-05-09 951-580-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 PERRIS CA
2022-05-09 951-622-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIRA LOMA CA
2022-05-09 951-875-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C BANNING CA
2022-05-09 951-875-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C BANNING CA
2022-04-19 951-605-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WOODCREST CA
2022-04-13 951-606-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 SUN CITY CA
2022-04-12 951-592-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H RIVERSIDE CA
2022-04-05 951-592-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2022-04-05 951-875-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BANNING CA
2022-04-05 951-875-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BANNING CA
2022-03-23 951-875-5XXX 5000–5999Assigned TON80 COMMUNICATIONS, LLC 516J BANNING CA
2022-03-23 951-977-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J ARLINGTON CA
2022-03-18 951-593-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2022-03-18 951-593-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2022-03-18 951-594-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2022-03-18 951-594-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2022-03-18 951-594-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2022-03-18 951-604-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HEMT SNJC CA
2022-03-18 951-604-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HEMT SNJC CA
2022-03-16 951-580-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PERRIS CA
2022-03-15 951-590-9XXX 9000–9999Assigned TON80 COMMUNICATIONS, LLC 516J HEMT HEMT CA
2022-03-15 951-604-0XXX 0000–0999Assigned TON80 COMMUNICATIONS, LLC 516J HEMT SNJC CA
2022-03-08 951-593-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2022-03-08 951-593-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2022-03-08 951-593-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2022-03-03 951-668-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F IDYLLWILD CA
2022-02-25 951-627-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PERRIS CA
2022-02-24 951-668-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J IDYLLWILD CA
2022-02-24 951-998-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J HEMT HMLD CA
2022-02-22 951-606-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SUN CITY CA
2022-02-18 951-942-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J 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.