NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

35 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 925
ONVOY, LLC - CA 24
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 5
BANDWIDTH.COM CLEC, LLC - CA 2
TELNYX LLC 1
T-MOBILE USA, INC. 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
2022-09-27 925-925-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C CONCORD CA
2022-09-27 925-925-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C CONCORD CA
2022-09-21 925-401-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PLEASANTON CA
2022-09-21 925-523-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PLEASANTON CA
2022-09-20 925-502-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DANVILLE CA
2022-09-16 925-369-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MARTINEZ CA
2022-09-16 925-608-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C MARTINEZ CA
2022-09-08 925-897-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DUBLN-SNRM CA
2022-09-08 925-897-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DUBLN-SNRM CA
2022-09-08 925-897-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DUBLN-SNRM CA
2022-09-08 925-897-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DUBLN-SNRM CA
2022-09-08 925-897-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DUBLN-SNRM CA
2022-09-06 925-496-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2022-09-01 925-501-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2022-09-01 925-501-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2022-09-01 925-501-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2022-09-01 925-501-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2022-09-01 925-897-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DUBLN-SNRM CA
2022-08-16 925-546-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 WALNUT CRK CA
2022-08-11 925-546-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2022-08-11 925-546-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2022-08-05 925-302-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BSHP RNCH CA
2022-08-04 925-317-0XXX 0000–0999Assigned IP HORIZON LLC 515J ORINDA CA
2022-07-29 925-709-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C PSBG WEST CA
2022-07-28 925-505-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J LIVERMORE CA
2022-07-21 925-502-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2022-07-20 925-501-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2022-07-20 925-501-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2022-07-19 925-208-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2022-07-15 925-496-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CONCORD CA
2022-07-15 925-496-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CONCORD CA
2022-07-12 925-832-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ECONTRCOST CA
2022-07-12 925-832-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ECONTRCOST CA
2022-07-12 925-832-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ECONTRCOST CA
2022-07-12 925-832-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ECONTRCOST CA
2022-07-12 925-832-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ECONTRCOST CA
2022-06-30 925-733-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2022-06-29 925-441-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ANTIOCH CA
2022-06-29 925-441-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ANTIOCH CA
2022-06-23 925-590-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H BSHP RNCH CA
2022-06-15 925-351-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLEASANTON CA
2022-05-31 925-517-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PSBG WEST CA
2022-05-25 925-567-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CLAYTON CA
2022-05-17 925-501-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2022-05-17 925-501-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2022-05-06 925-269-5XXX 5000–5999Assigned METROPCS, INC. 5562 MARTINEZ CA
2022-03-16 925-496-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2022-03-16 925-496-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2022-03-16 925-496-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2022-03-16 925-496-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.