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
2019-04-04 925-440-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALNUT CRK CA
2019-04-04 925-440-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALNUT CRK CA
2019-03-26 925-404-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DUBLN-SNRM CA
2019-03-20 925-655-5XXX 5000–5999Assigned FRACTEL, LLC 965H CONCORD CA
2019-03-20 925-758-6XXX 6000–6999Assigned FRACTEL, LLC 965H LIVERMORE CA
2019-03-20 925-799-9XXX 9000–9999Assigned FRACTEL, LLC 965H PITTSBURG CA
2019-03-20 925-877-7XXX 7000–7999Assigned FRACTEL, LLC 965H ANTIOCH CA
2019-03-05 925-412-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2019-03-05 925-412-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2019-03-05 925-412-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2019-03-05 925-967-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DUBLN-SNRM CA
2019-02-28 925-973-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BSHP RNCH CA
2019-02-25 925-412-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2019-02-25 925-412-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2019-02-25 925-412-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2019-02-25 925-839-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MARTINEZ CA
2019-02-25 925-839-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C MARTINEZ CA
2019-02-19 925-839-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MARTINEZ CA
2019-02-12 925-528-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C ORINDA CA
2019-02-12 925-528-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C ORINDA CA
2019-02-12 925-962-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C LAFAYETTE CA
2019-02-12 925-962-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LAFAYETTE CA
2019-01-31 925-913-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BSHP RNCH CA
2019-01-28 925-440-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALNUT CRK CA
2019-01-28 925-440-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALNUT CRK CA
2019-01-28 925-440-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALNUT CRK CA
2019-01-28 925-440-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALNUT CRK CA
2019-01-25 925-856-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2019-01-24 925-302-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BSHP RNCH CA
2019-01-24 925-415-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C BSHP RNCH CA
2019-01-24 925-431-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C PITTSBURG CA
2019-01-24 925-477-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C ANTIOCH CA
2019-01-24 925-477-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C ANTIOCH CA
2019-01-24 925-477-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C ANTIOCH CA
2019-01-24 925-477-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C ANTIOCH CA
2019-01-18 925-477-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2019-01-07 925-440-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2018-12-17 925-282-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LAFAYETTE CA
2018-12-11 925-592-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MORAGA CA
2018-11-26 925-434-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2018-11-26 925-436-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2018-11-20 925-412-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2018-11-20 925-412-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2018-11-20 925-412-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2018-11-09 925-790-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BSHP RNCH CA
2018-11-02 925-440-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALNUT CRK CA
2018-10-18 925-468-2XXX 2000–2999Assigned TELNYX LLC 073H PLEASANTON CA
2018-10-18 925-528-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ORINDA CA
2018-10-17 925-388-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MORAGA CA
2018-10-17 925-660-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PLEASANTON 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.