NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

24 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 9
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
2019-04-11 530-619-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L COLUSA CA
2019-04-04 530-220-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DAVIS CA
2019-04-01 530-606-2XXX 2000–2999Assigned CSC WIRELESS, LLC 425J TRUCKEE CA
2019-03-28 530-490-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WOODLAND CA
2019-03-20 530-799-9XXX 9000–9999Assigned FRACTEL, LLC 965H MARYSVILLE CA
2019-03-19 530-599-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MARYSVILLE CA
2019-03-05 530-499-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C PLVL WEST CA
2019-03-05 530-499-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C PLVL WEST CA
2019-03-05 530-499-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C PLVL WEST CA
2019-03-04 530-599-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L MARYSVILLE CA
2019-02-26 530-806-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 REDDING CA
2019-02-25 530-261-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C MT SHASTA CA
2019-02-25 530-324-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C WILLOW CRK CA
2019-02-25 530-568-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C MT SHASTA CA
2019-02-25 530-629-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C WILLOW CRK CA
2019-02-25 530-652-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E GRVY SOUTH CA
2019-02-25 530-734-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C FRENCHGLCH CA
2019-02-25 530-734-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C FRENCHGLCH CA
2019-02-20 530-608-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TRUCKEE CA
2019-02-14 530-204-6XXX 6000–6999Assigned METROPCS, INC. 5562 DAVIS CA
2019-02-12 530-232-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C REDDING CA
2019-02-12 530-232-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C REDDING CA
2019-02-12 530-248-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C REDDING CA
2019-02-12 530-248-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C REDDING CA
2019-02-12 530-322-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C PORTOLA CA
2019-02-12 530-380-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LEWISTON CA
2019-02-12 530-380-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LEWISTON CA
2019-02-12 530-480-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BLAIRSDEN CA
2019-02-12 530-480-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BLAIRSDEN CA
2019-02-12 530-486-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C STONYFORD CA
2019-02-12 530-486-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C STONYFORD CA
2019-02-12 530-561-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C ANDERSON CA
2019-02-12 530-561-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C ANDERSON CA
2019-02-12 530-603-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BANGOR CA
2019-02-12 530-603-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BANGOR CA
2019-02-12 530-616-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C QUINCY CA
2019-02-12 530-616-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C QUINCY CA
2019-02-12 530-678-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C DUNSMUIR CA
2019-02-12 530-678-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C DUNSMUIR CA
2019-02-12 530-732-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C GERBER CA
2019-02-12 530-732-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C GERBER CA
2019-02-12 530-733-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C GAZELLE CA
2019-02-12 530-733-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C GAZELLE CA
2019-02-12 530-832-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C PORTOLA CA
2019-02-12 530-861-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C VINA CA
2019-02-12 530-861-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C VINA CA
2019-02-12 530-869-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BIGGS CA
2019-02-12 530-869-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BIGGS CA
2019-02-11 530-460-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRVY MAIN CA
2019-02-11 530-815-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHICO 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.