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
2021-03-24 925-839-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MARTINEZ CA
2021-03-19 925-386-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C ORINDA CA
2021-03-19 925-386-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C ORINDA CA
2021-03-19 925-489-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C ANTIOCH CA
2021-03-19 925-489-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C ANTIOCH CA
2021-03-19 925-489-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C ANTIOCH CA
2021-03-19 925-578-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C ECONTRCOST CA
2021-03-19 925-578-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C ECONTRCOST CA
2021-03-19 925-578-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C ECONTRCOST CA
2021-03-19 925-914-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C CLAYTON CA
2021-03-19 925-914-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C CLAYTON CA
2021-03-18 925-235-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MORAGA CA
2021-03-15 925-804-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BSHP RNCH CA
2021-03-15 925-804-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BSHP RNCH CA
2021-03-15 925-804-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BSHP RNCH CA
2021-03-05 925-272-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2021-03-05 925-272-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2021-03-05 925-553-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2021-03-05 925-678-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2021-03-05 925-718-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2021-03-05 925-886-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2021-02-25 925-744-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2021-02-25 925-819-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DUBLN-SNRM CA
2021-02-25 925-819-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DUBLN-SNRM CA
2021-02-25 925-819-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DUBLN-SNRM CA
2021-02-22 925-804-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BSHP RNCH CA
2021-02-22 925-913-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BSHP RNCH CA
2021-02-22 925-913-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BSHP RNCH CA
2021-02-18 925-533-7XXX 7000–7999Assigned METROPCS, INC. 5562 LIVERMORE CA
2021-02-12 925-515-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2021-02-12 925-515-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CONCORD CA
2021-02-05 925-914-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CLAYTON CA
2021-02-03 925-386-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C ORINDA CA
2021-02-02 925-304-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C CLAYTON CA
2021-01-29 925-208-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2021-01-29 925-309-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DANVILLE CA
2021-01-28 925-257-6XXX 6000–6999Assigned TELNYX LLC 073H ORINDA CA
2021-01-27 925-599-9XXX 9000–9999Assigned FRACTEL, LLC 965H LIVERMORE CA
2021-01-15 925-664-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PSBG WEST CA
2021-01-07 925-489-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2021-01-07 925-489-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2021-01-07 925-489-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2021-01-07 925-489-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2021-01-07 925-489-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2020-12-10 925-258-5XXX 5000–5999Assigned TERRA NOVA TELECOM INC. 145J ORINDA CA
2020-12-10 925-709-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J PSBG WEST CA
2020-12-08 925-377-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J MORAGA CA
2020-12-08 925-404-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J DUBLN-SNRM CA
2020-12-03 925-430-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C WALNUT CRK CA
2020-12-03 925-430-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C WALNUT CRK 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.