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
2021-06-08 530-702-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WOODLAND CA
2021-05-25 530-616-4XXX 4000–4999Assigned UNITED STATES CELLULAR - CA 6261 QUINCY CA
2021-05-16 530-460-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRVY MAIN CA
2021-05-16 530-702-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WOODLAND CA
2021-05-08 530-663-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLVL SOUTH CA
2021-05-05 530-600-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SOUTHTAHOE CA
2021-05-04 530-506-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F KNIGHTSLDG CA
2021-05-04 530-593-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NORTH YUBA CA
2021-05-04 530-663-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PLVL SOUTH CA
2021-05-04 530-699-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DUNNIGAN CA
2021-05-04 530-728-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F GRVY SOUTH CA
2021-04-22 530-328-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2021-04-22 530-328-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2021-04-22 530-328-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2021-04-22 530-609-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H ALLEGHANY CA
2021-04-22 530-609-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H ALLEGHANY CA
2021-04-22 530-609-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H ALLEGHANY CA
2021-04-20 530-789-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2021-04-19 530-649-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LIVE OAK CA
2021-04-17 530-866-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J COLFAX CA
2021-04-14 530-901-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHICO CA
2021-04-12 530-471-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C WEED CA
2021-04-12 530-561-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C ANDERSON CA
2021-04-12 530-561-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C ANDERSON CA
2021-04-12 530-572-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C YREKA CA
2021-04-12 530-572-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C YREKA CA
2021-04-12 530-625-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C HOOPA CA
2021-04-12 530-685-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C WILLOWS CA
2021-04-12 530-706-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C HAYFORK CA
2021-04-12 530-732-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C GERBER CA
2021-04-12 530-734-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C FRENCHGLCH CA
2021-04-12 530-772-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C CHALLENGE CA
2021-04-12 530-783-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C PARADISE CA
2021-04-12 530-783-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C PARADISE CA
2021-04-12 530-783-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PARADISE CA
2021-04-12 530-783-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C PARADISE CA
2021-04-12 530-804-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C WILLOWS CA
2021-04-12 530-868-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C BIGGS CA
2021-04-12 530-964-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MCCLOUD CA
2021-04-09 530-247-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDDING CA
2021-04-09 530-727-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 RED BLUFF CA
2021-04-06 530-284-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J GREENVILLE CA
2021-04-05 530-259-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CHESTER CA
2021-04-02 530-255-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 REDDING CA
2021-03-30 530-647-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J PLVL WEST CA
2021-03-30 530-670-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C CORNING CA
2021-03-29 530-607-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F WHEATLAND CA
2021-03-29 530-702-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WOODLAND CA
2021-03-19 530-778-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C LEWISTON CA
2021-03-19 530-784-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C WEAVERVL 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.