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
2012-12-04 925-310-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LAFAYETTE CA
2012-12-04 925-310-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C LAFAYETTE CA
2012-12-04 925-523-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C PLEASANTON CA
2012-12-04 925-523-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PLEASANTON CA
2012-12-04 925-523-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C PLEASANTON CA
2012-12-04 925-594-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C DANVILLE CA
2012-12-04 925-594-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C DANVILLE CA
2012-12-04 925-594-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C DANVILLE CA
2012-12-04 925-804-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BSHP RNCH CA
2012-12-04 925-804-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C BSHP RNCH CA
2012-12-03 925-238-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C ANTIOCH CA
2012-12-03 925-464-5XXX 5000–5999Assigned SONIC TELECOM, LLC - CA 433E WALNUT CRK CA
2012-12-03 925-918-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLEASANTON CA
2012-11-29 925-475-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PLEASANTON CA
2012-11-28 925-385-3XXX 3000–3999Assigned SONIC TELECOM, LLC - CA 433E LAFAYETTE CA
2012-11-28 925-446-8XXX 8000–8999Assigned SONIC TELECOM, LLC - CA 433E CONCORD CA
2012-11-28 925-723-7XXX 7000–7999Assigned SONIC TELECOM, LLC - CA 433E MARTINEZ CA
2012-11-16 925-420-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ECONTRCOST CA
2012-11-16 925-446-2XXX 2000–2999Assigned METROPCS, INC. 5562 CONCORD CA
2012-11-16 925-446-5XXX 5000–5999Assigned METROPCS, INC. 5562 CONCORD CA
2012-11-16 925-446-7XXX 7000–7999Assigned METROPCS, INC. 5562 CONCORD CA
2012-11-14 925-240-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ECONTRCOST CA
2012-11-14 925-517-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PSBG WEST CA
2012-11-12 925-361-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 DUBLN-SNRM CA
2012-11-06 925-368-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PLEASANTON CA
2012-10-30 925-474-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J PLEASANTON CA
2012-10-30 925-474-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J PLEASANTON CA
2012-10-04 925-332-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CONCORD CA
2012-10-04 925-332-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CONCORD CA
2012-10-04 925-332-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CONCORD CA
2012-10-04 925-332-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CONCORD CA
2012-10-04 925-332-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CONCORD CA
2012-10-01 925-446-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CONCORD CA
2012-10-01 925-446-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CONCORD CA
2012-10-01 925-549-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DUBLN-SNRM CA
2012-10-01 925-800-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LIVERMORE CA
2012-09-26 925-999-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DUBLN-SNRM CA
2012-09-21 925-967-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DUBLN-SNRM CA
2012-09-21 925-967-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DUBLN-SNRM CA
2012-09-19 925-404-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DUBLN-SNRM CA
2012-09-18 925-464-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WALNUT CRK CA
2012-09-18 925-464-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WALNUT CRK CA
2012-09-17 925-446-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 CONCORD CA
2012-09-17 925-529-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 ANTIOCH CA
2012-09-17 925-983-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 BSHP RNCH CA
2012-09-14 925-856-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2012-09-10 925-446-6XXX 6000–6999Assigned ASTOUND BROADBAND, LLC - CA 485E CONCORD CA
2012-08-17 925-350-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANTIOCH CA
2012-08-17 925-421-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2012-08-15 925-350-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C ANTIOCH 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.