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
2021-07-02 925-570-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C DUBLN-SNRM CA
2021-07-02 925-578-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C ECONTRCOST CA
2021-07-02 925-578-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C ECONTRCOST CA
2021-07-02 925-578-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C ECONTRCOST CA
2021-07-02 925-578-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C ECONTRCOST CA
2021-07-02 925-643-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C PSBG WEST CA
2021-07-02 925-744-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C WALNUT CRK CA
2021-07-02 925-799-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C PITTSBURG CA
2021-07-02 925-799-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C PITTSBURG CA
2021-07-02 925-799-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PITTSBURG CA
2021-07-02 925-799-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C PITTSBURG CA
2021-07-02 925-804-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C BSHP RNCH CA
2021-06-28 925-515-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CONCORD CA
2021-06-28 925-568-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SUNOL CA
2021-06-28 925-578-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H ECONTRCOST CA
2021-06-28 925-664-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H PSBG WEST CA
2021-06-28 925-744-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H WALNUT CRK CA
2021-06-28 925-799-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H PITTSBURG CA
2021-06-28 925-877-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H ANTIOCH CA
2021-06-17 925-578-0XXX 0000–0999Assigned SONIC TELECOM, LLC - CA 433E ECONTRCOST CA
2021-06-08 925-744-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2021-06-08 925-744-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2021-05-20 925-931-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLEASANTON CA
2021-05-10 925-386-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C ORINDA CA
2021-05-10 925-386-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C ORINDA CA
2021-05-09 925-450-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ECONTRCOST CA
2021-05-04 925-217-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DANVILLE CA
2021-05-04 925-297-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LAFAYETTE CA
2021-05-04 925-799-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PITTSBURG CA
2021-04-26 925-341-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H LIVERMORE CA
2021-04-26 925-341-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H LIVERMORE CA
2021-04-20 925-249-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLEASANTON CA
2021-04-18 925-966-6XXX 6000–6999Assigned FRACTEL, LLC 965H ANTIOCH CA
2021-04-12 925-744-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C WALNUT CRK CA
2021-04-12 925-744-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C WALNUT CRK CA
2021-04-12 925-744-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C WALNUT CRK CA
2021-04-12 925-744-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C WALNUT CRK CA
2021-04-09 925-848-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANTIOCH CA
2021-04-08 925-524-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLAYTON CA
2021-04-08 925-524-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLAYTON CA
2021-04-05 925-445-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2021-04-05 925-445-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2021-04-05 925-445-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2021-04-05 925-445-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2021-04-05 925-445-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2021-04-02 925-219-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2021-04-02 925-477-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2021-03-30 925-219-1XXX 1000–1999Assigned TERRA NOVA TELECOM INC. 145J ANTIOCH CA
2021-03-29 925-414-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J CONCORD CA
2021-03-24 925-664-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PSBG WEST 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.