NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

17 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 424
ONVOY, LLC - CA 15
OPENTACT INC. 1
NEW CINGULAR WIRELESS PCS, LLC 1
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
2010-05-21 424-645-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2010-05-21 424-744-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2010-05-17 424-246-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2010-05-17 424-250-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D LOMITA CA
2010-05-10 424-233-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN GRDN CA
2010-05-03 424-675-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HAWTHORNE CA
2010-04-23 424-217-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F EL SEGUNDO CA
2010-04-19 424-238-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K SNMN SNMN CA
2010-04-12 424-255-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HAWTHORNE CA
2010-04-05 424-644-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MALIBU CA
2010-04-05 424-645-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2010-03-31 424-208-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J W ANGELES CA
2010-03-16 424-251-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J LOMITA CA
2010-03-16 424-252-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J SNMN SNMN CA
2010-03-12 424-254-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 REDONDO CA
2010-03-08 424-212-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J REDONDO CA
2010-03-08 424-225-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EL SEGUNDO CA
2010-03-08 424-225-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EL SEGUNDO CA
2010-02-11 424-253-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEVERLYHLS CA
2010-02-09 424-703-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN PEDRO CA
2010-02-09 424-703-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN PEDRO CA
2010-02-09 424-703-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN PEDRO CA
2010-02-05 424-571-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C TORRANCE CA
2010-02-02 424-652-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 W ANGELES CA
2010-02-01 424-237-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2010-02-01 424-253-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2010-02-01 424-253-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2010-02-01 424-253-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2010-01-29 424-224-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN PEDRO CA
2010-01-29 424-240-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HAWTHORNE CA
2010-01-29 424-240-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HAWTHORNE CA
2010-01-29 424-240-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HAWTHORNE CA
2010-01-29 424-242-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2010-01-29 424-242-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2010-01-29 424-242-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2010-01-29 424-248-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2010-01-29 424-248-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2010-01-29 424-248-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2010-01-29 424-248-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2010-01-29 424-646-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E INGLEWOOD CA
2010-01-29 424-704-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2010-01-29 424-704-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2010-01-29 424-785-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2010-01-28 424-226-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E AVALON CA
2010-01-28 424-226-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E AVALON CA
2010-01-28 424-250-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LOMITA CA
2010-01-28 424-571-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E TORRANCE CA
2010-01-28 424-571-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E TORRANCE CA
2010-01-27 424-225-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E EL SEGUNDO CA
2010-01-27 424-225-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E EL SEGUNDO 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.