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
2010-01-27 424-235-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2010-01-27 424-235-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2010-01-27 424-235-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2010-01-27 424-259-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2010-01-27 424-259-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2010-01-27 424-259-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2010-01-27 424-645-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2010-01-18 424-240-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2010-01-12 424-625-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D SNMN MRVS CA
2010-01-07 424-646-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D INGLEWOOD CA
2010-01-06 424-219-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D CMTN GRDN CA
2010-01-05 424-703-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D SAN PEDRO CA
2010-01-05 424-703-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D SAN PEDRO CA
2010-01-05 424-703-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D SAN PEDRO CA
2009-12-29 424-240-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2009-12-29 424-246-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D CMTN GRDN CA
2009-12-29 424-248-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D W ANGELES CA
2009-12-22 424-571-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D TORRANCE CA
2009-12-19 424-228-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SNMN MRVS CA
2009-12-19 424-229-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D SNMN SNMN CA
2009-12-15 424-571-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D TORRANCE CA
2009-12-14 424-738-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C AVALON CA
2009-12-11 424-239-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2009-12-09 424-234-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2009-12-09 424-234-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2009-12-09 424-234-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2009-12-09 424-234-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2009-12-09 424-235-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2009-11-25 424-236-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HAWTHORNE CA
2009-11-24 424-243-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 INGLEWOOD CA
2009-10-26 424-253-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEVERLYHLS CA
2009-10-26 424-253-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEVERLYHLS CA
2009-10-23 424-243-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J INGLEWOOD CA
2009-10-22 424-239-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2009-10-22 424-245-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2009-10-22 424-249-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2009-10-22 424-354-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2009-10-19 424-217-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J EL SEGUNDO CA
2009-10-19 424-249-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J BEVERLYHLS CA
2009-10-19 424-249-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J BEVERLYHLS CA
2009-10-16 424-238-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNMN SNMN CA
2009-10-09 424-249-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K BEVERLYHLS CA
2009-09-22 424-259-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2009-09-18 424-248-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J W ANGELES CA
2009-09-16 424-206-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L REDONDO CA
2009-09-14 424-228-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNMN MRVS CA
2009-09-11 424-249-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2009-09-10 424-250-4XXX 4000–4999Assigned IP HORIZON LLC 515J LOMITA CA
2009-09-09 424-237-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 REDONDO CA
2009-09-09 424-241-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D REDONDO 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.