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
2019-01-28 530-862-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C DOWNIEVL CA
2019-01-28 530-862-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C DOWNIEVL CA
2019-01-23 530-319-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K REDDING CA
2019-01-23 530-490-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WOODLAND CA
2019-01-18 530-630-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 CHICO CA
2019-01-16 530-779-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 MILLVILLE CA
2019-01-10 530-250-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SUSANVILLE CA
2018-12-17 530-565-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 LIVE OAK CA
2018-11-29 530-460-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 GRVY MAIN CA
2018-11-21 530-358-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NOSAN JUAN CA
2018-11-21 530-422-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CLFX WEMR CA
2018-11-20 530-450-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J AUBN MAIN CA
2018-11-16 530-464-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ALTA CA
2018-11-15 530-499-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PLVL WEST CA
2018-11-14 530-862-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DOWNIEVL CA
2018-11-13 530-240-1XXX 1000–1999Assigned TELNYX LLC 073H PLVL KYBRZ CA
2018-11-13 530-447-1XXX 1000–1999Assigned TELNYX LLC 073H ALLEGHANY CA
2018-11-13 530-455-8XXX 8000–8999Assigned TELNYX LLC 073H LIVE OAK CA
2018-11-13 530-464-9XXX 9000–9999Assigned TELNYX LLC 073H ALTA CA
2018-11-13 530-663-9XXX 9000–9999Assigned TELNYX LLC 073H PLVL SOUTH CA
2018-11-12 530-457-8XXX 8000–8999Assigned TELNYX LLC 073H GEORGETOWN CA
2018-11-12 530-807-0XXX 0000–0999Assigned TELNYX LLC 073H NTAH THCY CA
2018-11-07 530-499-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLVL WEST CA
2018-11-05 530-721-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SOUTHTAHOE CA
2018-10-24 530-565-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LIVE OAK CA
2018-10-19 530-607-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WHEATLAND CA
2018-10-18 530-557-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NEVADACITY CA
2018-10-17 530-393-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WILLIAMS CA
2018-10-09 530-868-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BIGGS CA
2018-10-08 530-561-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANDERSON CA
2018-10-04 530-560-0XXX 0000–0999Assigned AIRESPRING, INC. 996H REDDING CA
2018-10-04 530-599-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2018-10-04 530-790-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2018-10-02 530-460-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRVY MAIN CA
2018-10-02 530-599-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MARYSVILLE CA
2018-10-02 530-678-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C DUNSMUIR CA
2018-10-01 530-663-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLVL SOUTH CA
2018-09-26 530-260-4XXX 4000–4999Assigned UNITED STATES CELLULAR - CA 6261 SUSANVILLE CA
2018-09-26 530-642-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLVL WEST CA
2018-09-04 530-489-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C HOMEWOOD CA
2018-08-29 530-317-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C PLVL WEST CA
2018-08-29 530-317-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C PLVL WEST CA
2018-08-28 530-479-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C VERDI CA
2018-08-28 530-479-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C VERDI CA
2018-08-24 530-399-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHICO CA
2018-08-23 530-490-6XXX 6000–6999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7174 WOODLAND CA
2018-08-09 530-490-0XXX 0000–0999Assigned AIRESPRING, INC. 996H WOODLAND CA
2018-08-02 530-536-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F TRUCKEE CA
2018-08-02 530-548-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NTAH BCWY CA
2018-07-06 530-236-1XXX 1000–1999Assigned TELNYX LLC 073H CHALLENGE 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.