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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2010-06-21 530-735-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C KNIGHTSLDG CA
2010-06-21 530-797-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C GRIDLEY CA
2010-06-21 530-870-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C MARYSVILLE CA
2010-06-18 530-457-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C GEORGETOWN CA
2010-06-18 530-512-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C COLFAX CA
2010-06-18 530-522-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C CAMPTONVL CA
2010-06-18 530-637-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C CLFX WEMR CA
2010-06-18 530-724-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C DUNNIGAN CA
2010-06-18 530-747-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C DAVIS CA
2010-06-18 530-787-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C ESPARTO CA
2010-06-18 530-862-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C DOWNIEVL CA
2010-06-16 530-302-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DAVIS CA
2010-06-16 530-389-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C ALTA CA
2010-06-16 530-466-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C ALLEGHANY CA
2010-06-16 530-718-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C AUBN MAIN CA
2010-06-16 530-763-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MARYSVILLE CA
2010-06-16 530-830-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C AUBN NORTH CA
2010-06-04 530-737-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RED BLUFF CA
2010-05-26 530-636-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHICO CA
2010-05-26 530-645-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MARYSVILLE CA
2010-05-26 530-645-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MARYSVILLE CA
2010-05-26 530-710-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDDING CA
2010-05-14 530-322-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PORTOLA CA
2010-05-03 530-255-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K REDDING CA
2010-04-23 530-615-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L GRVY MAIN CA
2010-04-13 530-553-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K NTAH BCWY CA
2010-04-07 530-250-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SUSANVILLE CA
2010-03-31 530-253-8XXX 8000–8999Assigned CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 2308 JANESVILLE CA
2010-03-31 530-256-1XXX 1000–1999Assigned CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 3402 WESTWOOD CA
2010-03-31 530-816-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CHESTER CA
2010-03-23 530-646-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 REDDING CA
2010-03-15 530-719-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 PLVL SOUTH CA
2010-03-05 530-718-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 AUBN MAIN CA
2010-03-05 530-722-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDDING CA
2010-03-03 530-255-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDDING CA
2010-03-03 530-643-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 YREKA CA
2010-03-03 530-966-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHICO CA
2010-03-02 530-300-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MARYSVILLE CA
2010-02-26 530-852-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AUBN MAIN CA
2010-02-26 530-852-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AUBN MAIN CA
2010-02-19 530-588-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHICO CA
2010-02-17 530-710-5XXX 5000–5999Assigned METROPCS, INC. 5562 REDDING CA
2010-02-17 530-710-6XXX 6000–6999Assigned METROPCS, INC. 5562 REDDING CA
2010-02-17 530-710-7XXX 7000–7999Assigned METROPCS, INC. 5562 REDDING CA
2010-02-17 530-761-1XXX 1000–1999Assigned METROPCS, INC. 5562 DAVIS CA
2010-02-11 530-876-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C PARADISE CA
2010-02-06 530-790-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2010-02-05 530-615-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 GRVY MAIN CA
2010-02-04 530-440-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDDING CA
2010-02-04 530-440-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 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.