NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

35 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 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
2020-04-23 925-341-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LIVERMORE CA
2020-04-21 925-223-9XXX 9000–9999Assigned AIRESPRING, INC. 996H PLEASANTON CA
2020-04-21 925-341-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LIVERMORE CA
2020-04-20 925-259-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ORINDA CA
2020-04-17 925-871-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LAFAYETTE CA
2020-04-15 925-758-8XXX 8000–8999Assigned METROPCS, INC. 5562 LIVERMORE CA
2020-04-09 925-414-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2020-04-07 925-592-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C MORAGA CA
2020-04-07 925-592-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MORAGA CA
2020-04-07 925-664-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PSBG WEST CA
2020-04-07 925-664-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PSBG WEST CA
2020-04-07 925-794-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MORAGA CA
2020-03-31 925-430-3XXX 3000–3999Assigned METROPCS, INC. 5562 WALNUT CRK CA
2020-03-31 925-430-4XXX 4000–4999Assigned METROPCS, INC. 5562 WALNUT CRK CA
2020-03-31 925-917-3XXX 3000–3999Assigned METROPCS, INC. 5562 MARTINEZ CA
2020-03-23 925-839-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MARTINEZ CA
2020-03-18 925-758-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LIVERMORE CA
2020-03-16 925-915-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2020-03-16 925-915-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2020-03-16 925-915-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2020-03-11 925-758-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 LIVERMORE CA
2020-03-05 925-306-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ECONTRCOST CA
2020-03-04 925-430-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2020-03-03 925-430-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F WALNUT CRK CA
2020-03-02 925-854-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2020-03-02 925-856-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2020-02-26 925-758-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LIVERMORE CA
2020-02-26 925-758-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LIVERMORE CA
2020-02-26 925-775-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANTIOCH CA
2020-01-22 925-587-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L DUBLN-SNRM CA
2020-01-22 925-758-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LIVERMORE CA
2020-01-09 925-877-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2020-01-09 925-877-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2019-12-18 925-660-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PLEASANTON CA
2019-11-22 925-319-0XXX 0000–0999Assigned TELNYX LLC 073H SUNOL CA
2019-11-22 925-414-6XXX 6000–6999Assigned VONAGE AMERICA LLC 197D CONCORD CA
2019-11-04 925-430-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2019-11-04 925-738-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PLEASANTON CA
2019-10-23 925-306-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ECONTRCOST CA
2019-10-11 925-406-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2019-10-11 925-406-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2019-10-09 925-430-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L WALNUT CRK CA
2019-09-26 925-574-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DUBLN-SNRM CA
2019-09-23 925-758-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LIVERMORE CA
2019-09-05 925-794-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MORAGA CA
2019-09-03 925-856-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2019-08-09 925-414-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C CONCORD CA
2019-08-09 925-414-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C CONCORD CA
2019-08-09 925-807-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BSHP RNCH CA
2019-08-08 925-888-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MORAGA 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.