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
2010-08-24 925-298-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LAFAYETTE CA
2010-08-24 925-365-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BSHP RNCH CA
2010-08-24 925-380-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L BSHP RNCH CA
2010-08-18 925-429-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CONCORD CA
2010-08-17 925-231-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MARTINEZ CA
2010-08-12 925-231-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MARTINEZ CA
2010-08-11 925-521-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CONCORD CA
2010-08-10 925-257-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ORINDA CA
2010-08-10 925-261-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PSBG WEST CA
2010-08-10 925-380-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BSHP RNCH CA
2010-08-10 925-380-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BSHP RNCH CA
2010-08-10 925-380-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BSHP RNCH CA
2010-08-10 925-380-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BSHP RNCH CA
2010-08-10 925-398-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PLEASANTON CA
2010-08-09 925-349-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CONCORD CA
2010-08-09 925-364-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DUBLN-SNRM CA
2010-08-09 925-364-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DUBLN-SNRM CA
2010-08-09 925-405-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CONCORD CA
2010-08-09 925-479-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DUBLN-SNRM CA
2010-08-09 925-479-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DUBLN-SNRM CA
2010-08-09 925-479-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DUBLN-SNRM CA
2010-08-09 925-480-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BSHP RNCH CA
2010-08-09 925-480-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BSHP RNCH CA
2010-08-06 925-389-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2010-08-06 925-400-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLEASANTON CA
2010-08-04 925-292-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LIVERMORE CA
2010-08-03 925-226-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PLEASANTON CA
2010-08-03 925-233-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SUNOL CA
2010-08-03 925-257-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ORINDA CA
2010-08-03 925-261-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PSBG WEST CA
2010-07-16 925-269-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MARTINEZ CA
2010-07-09 925-301-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2010-07-08 925-579-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LIVERMORE CA
2010-07-06 925-954-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L WALNUT CRK CA
2010-06-29 925-775-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ANTIOCH CA
2010-06-23 925-983-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 BSHP RNCH CA
2010-06-16 925-951-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C WALNUT CRK CA
2010-06-16 925-954-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WALNUT CRK CA
2010-06-14 925-353-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLEASANTON CA
2010-06-08 925-267-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PITTSBURG CA
2010-06-08 925-361-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DUBLN-SNRM CA
2010-06-07 925-238-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ANTIOCH CA
2010-06-07 925-263-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DANVILLE CA
2010-06-07 925-315-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LIVERMORE CA
2010-06-07 925-392-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ECONTRCOST CA
2010-06-07 925-695-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2010-06-07 925-695-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2010-06-07 925-953-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WALNUT CRK CA
2010-06-04 925-667-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LIVERMORE CA
2010-05-25 925-389-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE 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.