NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

31 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 530
ONVOY, LLC - CA 16
BANDWIDTH.COM CLEC, LLC - CA 6
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 4
OPENTACT INC. 3
T-MOBILE USA, INC. 2
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
2021-09-10 530-390-2XXX 2000–2999Assigned COMMIO, LLC 939H LOSMOLINOS CA
2021-09-10 530-390-4XXX 4000–4999Assigned COMMIO, LLC 939H LOSMOLINOS CA
2021-09-10 530-685-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WILLOWS CA
2021-09-10 530-785-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J AUBN MAIN CA
2021-09-08 530-805-9XXX 9000–9999Assigned METROPCS, INC. 5562 ORLAND CA
2021-09-02 530-270-2XXX 2000–2999Assigned METROPCS, INC. 5562 GRVY MAIN CA
2021-09-02 530-452-8XXX 8000–8999Assigned METROPCS, INC. 5562 NTAH THCY CA
2021-09-01 530-455-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J LIVE OAK CA
2021-09-01 530-896-5XXX 5000–5999Assigned TERRA NOVA TELECOM INC. 145J CHICO CA
2021-08-31 530-780-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 REDDING CA
2021-08-31 530-780-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 REDDING CA
2021-08-27 530-591-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICO CA
2021-08-27 530-591-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICO CA
2021-08-27 530-709-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MARYSVILLE CA
2021-08-27 530-709-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MARYSVILLE CA
2021-08-26 530-388-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ALTA CA
2021-08-25 530-704-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WOODLAND CA
2021-08-25 530-779-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 MILLVILLE CA
2021-08-23 530-785-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2021-08-23 530-785-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2021-08-23 530-785-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2021-08-19 530-328-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2021-08-18 530-771-2XXX 2000–2999Assigned COMMIO, LLC 939H DAVIS CA
2021-08-18 530-771-3XXX 3000–3999Assigned COMMIO, LLC 939H DAVIS CA
2021-08-12 530-703-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OROVILLE CA
2021-08-12 530-703-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OROVILLE CA
2021-07-29 530-709-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MARYSVILLE CA
2021-07-27 530-697-0XXX 0000–0999Assigned TELNYX LLC 073H MT SHASTA CA
2021-07-16 530-389-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ALTA CA
2021-07-15 530-298-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C DAVIS CA
2021-07-15 530-302-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C DAVIS CA
2021-07-15 530-316-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BLAIRSDEN CA
2021-07-15 530-348-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C COTTONWOOD CA
2021-07-15 530-348-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C COTTONWOOD CA
2021-07-15 530-390-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C LOSMOLINOS CA
2021-07-15 530-394-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C QUINCY CA
2021-07-15 530-394-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C QUINCY CA
2021-07-15 530-399-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C CHICO CA
2021-07-15 530-399-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C CHICO CA
2021-07-15 530-404-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LEWISTON CA
2021-07-15 530-428-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C LOYALTON CA
2021-07-15 530-431-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C RICHVALE CA
2021-07-15 530-454-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C MERIDIAN CA
2021-07-15 530-456-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C GRIDLEY CA
2021-07-15 530-461-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BANGOR CA
2021-07-15 530-463-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C CAMPTONVL CA
2021-07-15 530-471-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C WEED CA
2021-07-15 530-479-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C VERDI CA
2021-07-15 530-484-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C ELK CREEK CA
2021-07-15 530-486-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C STONYFORD 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.