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
2009-10-02 530-440-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDDING CA
2009-10-02 530-845-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2009-09-25 530-615-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GRVY MAIN CA
2009-09-24 530-334-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 GEORGETOWN CA
2009-09-23 530-249-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SUSANVILLE CA
2009-09-23 530-414-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TRUCKEE CA
2009-09-23 530-643-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 YREKA CA
2009-09-18 530-205-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 GRVY MAIN CA
2009-09-18 530-723-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WOODLAND CA
2009-09-14 530-470-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NEVADACITY CA
2009-09-04 530-440-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDDING CA
2009-09-04 530-513-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHICO CA
2009-09-04 530-739-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WEAVERVL CA
2009-08-26 530-924-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CHICO CA
2009-08-03 530-501-3XXX 3000–3999Assigned METROPCS, INC. 5562 WILLIAMS CA
2009-08-03 530-605-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K REDDING CA
2009-07-20 530-616-9XXX 9000–9999Assigned UNITED STATES CELLULAR - CA 6261 QUINCY CA
2009-07-06 530-413-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PARADISE CA
2009-06-29 530-413-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PARADISE CA
2009-06-04 530-513-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHICO CA
2009-06-04 530-605-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDDING CA
2009-05-14 530-617-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LIVE OAK CA
2009-05-14 530-722-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDDING CA
2009-05-07 530-657-8XXX 8000–8999Assigned CAL-ORE COMMUNICATIONS, INC. - CA 734E WEED CA
2009-05-06 530-746-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7174 DAVIS CA
2009-05-04 530-737-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RED BLUFF CA
2009-05-01 530-414-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J TRUCKEE CA
2009-05-01 530-924-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CHICO CA
2009-04-28 530-715-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHICO CA
2009-04-21 530-690-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K RED BLUFF CA
2009-04-07 530-403-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OROVILLE CA
2009-04-01 530-402-1XXX 1000–1999Assigned ASTOUND BROADBAND, LLC - CA 485E WOODLAND CA
2009-04-01 530-746-4XXX 4000–4999Assigned ASTOUND BROADBAND, LLC - CA 485E DAVIS CA
2009-04-01 530-794-6XXX 6000–6999Assigned ASTOUND BROADBAND, LLC - CA 485E WINTERS CA
2009-04-01 530-820-3XXX 3000–3999Assigned ASTOUND BROADBAND, LLC - CA 485E AUBN MAIN CA
2009-03-23 530-562-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TRUCKEE CA
2009-03-04 530-712-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OROVILLE CA
2009-03-02 530-327-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C PARADISE CA
2009-03-02 530-366-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C RED BLUFF CA
2009-03-02 530-532-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C OROVILLE CA
2009-03-02 530-567-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C RED BLUFF CA
2009-03-02 530-763-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MARYSVILLE CA
2009-03-02 530-809-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C CHICO CA
2009-03-02 530-826-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C CHICO CA
2009-03-02 530-876-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C PARADISE CA
2009-02-13 530-712-0XXX 0000–0999Assigned METROPCS, INC. 5562 OROVILLE CA
2009-02-06 530-204-3XXX 3000–3999Assigned METROPCS, INC. 5562 DAVIS CA
2009-02-06 530-216-0XXX 0000–0999Assigned METROPCS, INC. 5562 MARYSVILLE CA
2009-02-06 530-216-3XXX 3000–3999Assigned METROPCS, INC. 5562 MARYSVILLE CA
2009-02-06 530-282-0XXX 0000–0999Assigned METROPCS, INC. 5562 OROVILLE 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.