NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

24 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2014-06-23 530-812-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MARYSVILLE CA
2014-06-23 530-812-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MARYSVILLE CA
2014-06-20 530-784-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WEAVERVL CA
2014-06-19 530-358-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NOSAN JUAN CA
2014-06-19 530-404-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LEWISTON CA
2014-06-19 530-475-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HORNBROOK CA
2014-06-19 530-553-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NTAH BCWY CA
2014-06-18 530-366-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RED BLUFF CA
2014-06-18 530-720-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHICO CA
2014-06-17 530-650-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WOODLAND CA
2014-06-16 530-491-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MARYSVILLE CA
2014-06-13 530-206-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PLVL KYBRZ CA
2014-06-13 530-492-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 AUBN MAIN CA
2014-06-11 530-338-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDDING CA
2014-06-11 530-338-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDDING CA
2014-06-11 530-461-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BANGOR CA
2014-06-10 530-491-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MARYSVILLE CA
2014-06-10 530-492-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2014-06-09 530-794-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WINTERS CA
2014-06-04 530-293-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PLVL KYBRZ CA
2014-05-30 530-802-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GRVY MAIN CA
2014-05-08 530-446-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 GRVY MAIN CA
2014-05-08 530-491-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MARYSVILLE CA
2014-05-05 530-762-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PARADISE CA
2014-04-24 530-264-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NEVADACITY CA
2014-04-24 530-384-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LOSMOLINOS CA
2014-04-24 530-505-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WINTERS CA
2014-04-22 530-497-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PLVL WEST CA
2014-04-21 530-784-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 WEAVERVL CA
2014-04-14 530-777-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C MARYSVILLE CA
2014-04-11 530-491-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2014-04-11 530-491-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2014-04-01 530-353-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OROVILLE CA
2014-04-01 530-491-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 MARYSVILLE CA
2014-04-01 530-523-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HOMEWOOD CA
2014-04-01 530-746-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DAVIS CA
2014-04-01 530-762-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PARADISE CA
2014-03-18 530-492-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E AUBN MAIN CA
2014-03-11 530-492-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AUBN MAIN CA
2014-03-11 530-600-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SOUTHTAHOE CA
2014-03-11 530-681-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WOODLAND CA
2014-03-07 530-531-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BIGGS CA
2014-03-06 530-720-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHICO CA
2014-03-05 530-215-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDDING CA
2014-02-28 530-446-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L GRVY MAIN CA
2014-02-26 530-424-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VINA CA
2014-02-26 530-425-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E STONYFORD CA
2014-02-25 530-422-3XXX 3000–3999Assigned CSC VOICE, LLC 612K CLFX WEMR CA
2014-02-25 530-883-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AUBN MAIN CA
2014-02-24 530-820-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.