NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

18 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 747
ONVOY, LLC - CA 7
EXIANT COMMUNICATIONS LLC 5
NEW CINGULAR WIRELESS PCS, LLC 2
BANDWIDTH.COM CLEC, LLC - CA 2
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 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
2016-09-16 747-999-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2016-09-15 747-263-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CANOGAPARK CA
2016-09-15 747-266-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFN SPLV CA
2016-09-14 747-218-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C LACRSCENTA CA
2016-09-14 747-267-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C RESEDA CA
2016-09-14 747-274-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D SNFN PACM CA
2016-09-13 747-217-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2016-09-13 747-217-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2016-09-13 747-217-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2016-09-13 747-249-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CANOGAPARK CA
2016-08-26 747-252-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFN GRHL CA
2016-08-26 747-267-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RESEDA CA
2016-08-26 747-274-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNFN PACM CA
2016-08-23 747-251-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFN PACM CA
2016-08-22 747-204-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CANOGAPARK CA
2016-08-22 747-268-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PSDN LACN CA
2016-08-18 747-239-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K SNFN GRHL CA
2016-08-16 747-214-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NO HOLLYWD CA
2016-08-16 747-257-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2016-08-16 747-257-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2016-08-15 747-261-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRBN BRBN CA
2016-08-10 747-217-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K VAN NUYS CA
2016-08-09 747-212-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F AGOURA CA
2016-08-08 747-210-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFN SNFN CA
2016-08-08 747-218-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LACRSCENTA CA
2016-08-08 747-283-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2016-08-03 747-265-5XXX 5000–5999Assigned HD CARRIER LLC 321J RESEDA CA
2016-08-03 747-265-8XXX 8000–8999Assigned HD CARRIER LLC 321J RESEDA CA
2016-08-02 747-212-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E AGOURA CA
2016-08-02 747-251-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNFN PACM CA
2016-08-01 747-217-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2016-08-01 747-217-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2016-08-01 747-217-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2016-08-01 747-217-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2016-07-28 747-271-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BRBN SNVY CA
2016-07-27 747-210-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFN SNFN CA
2016-07-27 747-266-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFN SPLV CA
2016-07-26 747-210-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2016-07-26 747-210-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2016-07-25 747-273-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E GLENDALE CA
2016-07-25 747-273-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E GLENDALE CA
2016-07-22 747-216-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORTHRIDGE CA
2016-07-22 747-216-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORTHRIDGE CA
2016-07-22 747-216-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORTHRIDGE CA
2016-07-19 747-214-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NO HOLLYWD CA
2016-07-19 747-214-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NO HOLLYWD CA
2016-07-19 747-261-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BRBN BRBN CA
2016-07-14 747-264-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C VAN NUYS CA
2016-07-14 747-264-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C VAN NUYS CA
2016-07-12 747-251-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFN PACM 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.