NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

31 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 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
2022-09-21 530-948-3XXX 3000–3999Assigned IP HORIZON LLC 515J MERIDIAN CA
2022-09-21 530-948-7XXX 7000–7999Assigned IP HORIZON LLC 515J MERIDIAN CA
2022-09-21 530-962-4XXX 4000–4999Assigned IP HORIZON LLC 515J SHASTALAKE CA
2022-09-20 530-993-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LOYALTON CA
2022-09-19 530-485-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2022-09-19 530-485-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2022-09-19 530-733-1XXX 1000–1999Assigned COMMIO, LLC 939H GAZELLE CA
2022-09-19 530-888-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2022-09-14 530-509-8XXX 8000–8999Assigned COMMIO, LLC 939H ORLEANS CA
2022-09-14 530-910-1XXX 1000–1999Assigned COMMIO, LLC 939H HAYFORK CA
2022-09-09 530-240-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C PLVL KYBRZ CA
2022-08-25 530-843-8XXX 8000–8999Assigned HD CARRIER LLC 321J CORNING CA
2022-08-25 530-843-9XXX 9000–9999Assigned HD CARRIER LLC 321J CORNING CA
2022-08-12 530-709-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MARYSVILLE CA
2022-08-09 530-255-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDDING CA
2022-07-27 530-608-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TRUCKEE CA
2022-07-26 530-291-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C PLVL KYBRZ CA
2022-07-21 530-932-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANDERSON CA
2022-07-20 530-685-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WILLOWS CA
2022-07-07 530-471-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WEED CA
2022-07-05 530-404-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J LEWISTON CA
2022-07-05 530-789-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2022-06-29 530-791-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ANDERSON CA
2022-06-29 530-791-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ANDERSON CA
2022-06-29 530-808-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J DAVIS CA
2022-06-29 530-808-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J DAVIS CA
2022-06-29 530-810-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BIGGS CA
2022-06-29 530-810-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BIGGS CA
2022-06-29 530-834-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J GRVY MAIN CA
2022-06-29 530-834-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J GRVY MAIN CA
2022-06-28 530-702-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 WOODLAND CA
2022-06-27 530-685-1XXX 1000–1999Assigned COMMIO, LLC 939H WILLOWS CA
2022-06-27 530-880-1XXX 1000–1999Assigned COMMIO, LLC 939H ORLAND CA
2022-06-20 530-473-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WILLIAMS CA
2022-06-14 530-608-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TRUCKEE CA
2022-06-14 530-781-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHICO CA
2022-06-14 530-781-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHICO CA
2022-06-10 530-280-9XXX 9000–9999Assigned COMMIO, LLC 939H QUINCY CA
2022-06-09 530-291-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PLVL KYBRZ CA
2022-06-09 530-772-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J CHALLENGE CA
2022-06-03 530-725-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SOUTHTAHOE CA
2022-06-03 530-967-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLVL SOUTH CA
2022-06-01 530-856-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CHICO CA
2022-06-01 530-856-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CHICO CA
2022-05-31 530-464-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J ALTA CA
2022-05-31 530-690-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 RED BLUFF CA
2022-05-26 530-610-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J REDDING CA
2022-05-26 530-610-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J REDDING CA
2022-05-23 530-291-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PLVL KYBRZ CA
2022-05-23 530-423-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C WEAVERVL 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.