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
2023-05-30 951-721-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J MURRIETA CA
2023-05-19 951-631-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2023-05-19 951-631-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2023-05-12 951-904-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TEMECULA CA
2023-05-12 951-904-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TEMECULA CA
2023-05-11 951-851-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2023-05-11 951-851-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2023-05-09 951-625-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CORONA CA
2023-05-09 951-625-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CORONA CA
2023-04-25 951-954-0XXX 0000–0999Assigned TELNYX LLC 073H TEMECULA CA
2023-04-20 951-606-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SUN CITY CA
2023-04-20 951-953-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SUN CITY CA
2023-04-20 951-953-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SUN CITY CA
2023-04-20 951-953-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SUN CITY CA
2023-04-18 951-608-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MIRA LOMA CA
2023-04-18 951-608-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MIRA LOMA CA
2023-04-14 951-618-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H RIVERSIDE CA
2023-04-14 951-618-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H RIVERSIDE CA
2023-04-14 951-624-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H ARLINGTON CA
2023-04-14 951-624-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H ARLINGTON CA
2023-04-14 951-625-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CORONA CA
2023-04-14 951-625-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CORONA CA
2023-04-13 951-625-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CORONA CA
2023-04-13 951-625-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CORONA CA
2023-04-13 951-625-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CORONA CA
2023-04-12 951-952-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H BANNING CA
2023-04-12 951-952-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H BANNING CA
2023-04-12 951-953-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H SUN CITY CA
2023-04-12 951-953-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H SUN CITY CA
2023-04-12 951-954-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H TEMECULA CA
2023-04-12 951-954-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H TEMECULA CA
2023-04-07 951-605-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2023-04-07 951-721-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C MURRIETA CA
2023-03-31 951-561-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TEMSCL CNY CA
2023-03-31 951-625-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C CORONA CA
2023-03-31 951-625-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C CORONA CA
2023-03-31 951-625-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C CORONA CA
2023-03-31 951-630-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2023-03-31 951-630-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MORENO CA
2023-03-31 951-638-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TEMSCL CNY CA
2023-03-15 951-613-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PERRIS CA
2023-03-15 951-613-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PERRIS CA
2023-03-07 951-721-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D MURRIETA CA
2023-03-02 951-605-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WOODCREST CA
2023-03-02 951-851-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2023-03-02 951-851-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2023-03-02 951-851-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2023-02-23 951-624-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ARLINGTON CA
2023-02-23 951-624-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ARLINGTON CA
2023-02-15 951-608-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIRA LOMA 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.