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
2014-10-21 530-813-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MARYSVILLE CA
2014-10-20 530-240-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLVL KYBRZ CA
2014-10-17 530-387-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SHINGLESPG CA
2014-10-17 530-393-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WILLIAMS CA
2014-10-17 530-691-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDDING CA
2014-10-17 530-691-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDDING CA
2014-10-17 530-830-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AUBN NORTH CA
2014-10-14 530-307-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SOUTHTAHOE CA
2014-10-14 530-761-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DAVIS CA
2014-10-14 530-813-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2014-10-13 530-815-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CHICO CA
2014-10-10 530-812-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2014-10-08 530-240-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PLVL KYBRZ CA
2014-10-03 530-408-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WEED CA
2014-10-03 530-492-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 AUBN MAIN CA
2014-10-02 530-377-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E COTTONWOOD CA
2014-10-02 530-385-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E GERBER CA
2014-10-02 530-683-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SHINGLESPG CA
2014-09-29 530-446-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GRVY MAIN CA
2014-09-25 530-564-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DAVIS CA
2014-09-25 530-924-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CHICO CA
2014-09-18 530-492-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2014-09-18 530-812-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C MARYSVILLE CA
2014-09-18 530-812-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C MARYSVILLE CA
2014-09-18 530-847-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C ALTA CA
2014-09-18 530-847-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C ALTA CA
2014-09-04 530-497-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLVL WEST CA
2014-09-04 530-812-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2014-09-04 530-812-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2014-09-04 530-812-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2014-09-04 530-812-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2014-08-29 530-446-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 GRVY MAIN CA
2014-08-28 530-768-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDDING CA
2014-08-21 530-487-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHICO CA
2014-08-15 530-768-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 REDDING CA
2014-08-13 530-737-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RED BLUFF CA
2014-08-12 530-457-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 GEORGETOWN CA
2014-08-11 530-650-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WOODLAND CA
2014-08-08 530-768-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDDING CA
2014-08-08 530-812-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2014-08-07 530-433-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHICO CA
2014-08-07 530-433-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHICO CA
2014-07-30 530-580-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NTAH THCY CA
2014-07-30 530-979-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DAVIS CA
2014-07-24 530-768-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDDING CA
2014-07-23 530-760-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DAVIS CA
2014-07-21 530-494-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SOUTHTAHOE CA
2014-07-21 530-955-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NEVADACITY CA
2014-07-09 530-358-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C NOSAN JUAN CA
2014-06-30 530-768-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K REDDING 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.