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
2020-09-18 925-466-6XXX 6000–6999Assigned FRACTEL, LLC 965H CONCORD CA
2020-09-18 925-533-3XXX 3000–3999Assigned FRACTEL, LLC 965H LIVERMORE CA
2020-09-18 925-775-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ANTIOCH CA
2020-09-18 925-775-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ANTIOCH CA
2020-08-30 925-450-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ECONTRCOST CA
2020-08-30 925-553-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2020-08-27 925-860-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SUNOL CA
2020-08-25 925-230-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DUBLN-SNRM CA
2020-08-25 925-359-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BSHP RNCH CA
2020-08-25 925-877-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2020-08-25 925-877-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2020-08-25 925-877-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2020-08-20 925-388-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MORAGA CA
2020-08-19 925-839-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MARTINEZ CA
2020-08-19 925-914-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CLAYTON CA
2020-08-11 925-488-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F WALNUT CRK CA
2020-08-11 925-915-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DANVILLE CA
2020-08-07 925-259-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ORINDA CA
2020-08-07 925-922-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PLEASANTON CA
2020-07-16 925-725-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DANVILLE CA
2020-07-15 925-410-0XXX 0000–0999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLEASANTON CA
2020-07-15 925-410-1XXX 1000–1999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLEASANTON CA
2020-07-15 925-410-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLEASANTON CA
2020-07-15 925-410-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLEASANTON CA
2020-07-15 925-410-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLEASANTON CA
2020-07-15 925-410-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLEASANTON CA
2020-07-15 925-410-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLEASANTON CA
2020-07-15 925-410-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLEASANTON CA
2020-07-15 925-410-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLEASANTON CA
2020-07-15 925-410-9XXX 9000–9999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLEASANTON CA
2020-07-07 925-914-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLAYTON CA
2020-06-26 925-450-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ECONTRCOST CA
2020-06-26 925-450-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ECONTRCOST CA
2020-06-26 925-450-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ECONTRCOST CA
2020-06-26 925-877-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2020-06-26 925-877-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2020-06-23 925-306-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ECONTRCOST CA
2020-06-23 925-666-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ECONTRCOST CA
2020-06-22 925-341-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H LIVERMORE CA
2020-06-22 925-341-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H LIVERMORE CA
2020-06-22 925-341-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H LIVERMORE CA
2020-06-17 925-414-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2020-06-17 925-414-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2020-06-17 925-414-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2020-06-09 925-967-9XXX 9000–9999Assigned VONAGE AMERICA LLC 197D DUBLN-SNRM CA
2020-06-03 925-341-6XXX 6000–6999Assigned VONAGE AMERICA LLC 197D LIVERMORE CA
2020-06-03 925-341-7XXX 7000–7999Assigned VONAGE AMERICA LLC 197D LIVERMORE CA
2020-06-01 925-488-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D WALNUT CRK CA
2020-06-01 925-488-1XXX 1000–1999Assigned VONAGE AMERICA LLC 197D WALNUT CRK CA
2020-05-20 925-694-8XXX 8000–8999Assigned VONAGE AMERICA LLC 197D PLEASANTON 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.