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 747
ONVOY, LLC - CA 12
EXIANT COMMUNICATIONS LLC 5
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2
NEW CINGULAR WIRELESS PCS, LLC 2
BANDWIDTH.COM CLEC, LLC - CA 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
2013-11-22 747-226-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CANOGAPARK CA
2013-11-22 747-226-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CANOGAPARK CA
2013-11-22 747-477-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BRBN BRBN CA
2013-11-22 747-477-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BRBN BRBN CA
2013-11-15 747-226-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2013-11-07 747-202-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NORTHRIDGE CA
2013-11-06 747-477-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2013-11-04 747-322-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SNFN SNFN CA
2013-11-04 747-322-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNFN SNFN CA
2013-10-30 747-226-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C CANOGAPARK CA
2013-10-22 747-400-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BRBN BRBN CA
2013-10-22 747-477-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BRBN BRBN CA
2013-10-11 747-600-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFN GRHL CA
2013-10-07 747-900-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CANOGAPARK CA
2013-09-27 747-226-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CANOGAPARK CA
2013-09-26 747-202-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NORTHRIDGE CA
2013-08-27 747-223-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2013-08-27 747-529-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SNFN SPLV CA
2013-08-21 747-400-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2013-08-09 747-529-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J SNFN SPLV CA
2013-08-06 747-220-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2013-08-06 747-220-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2013-08-06 747-220-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2013-08-06 747-220-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2013-08-06 747-220-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2013-08-06 747-220-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2013-08-06 747-220-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2013-08-05 747-220-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J AGOURA CA
2013-08-01 747-225-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D SNFN PACM CA
2013-07-23 747-300-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K SNFN GRHL CA
2013-07-17 747-477-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2013-06-18 747-233-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2013-06-13 747-226-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K CANOGAPARK CA
2013-06-13 747-226-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K CANOGAPARK CA
2013-06-13 747-233-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 VAN NUYS CA
2013-06-11 747-202-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K NORTHRIDGE CA
2013-06-07 747-400-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BRBN BRBN CA
2013-06-05 747-300-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFN GRHL CA
2013-05-28 747-220-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 AGOURA CA
2013-05-28 747-233-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 VAN NUYS CA
2013-05-20 747-233-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J VAN NUYS CA
2013-05-15 747-223-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BRBN SNVY CA
2013-05-10 747-233-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C VAN NUYS CA
2013-05-10 747-233-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C VAN NUYS CA
2013-04-30 747-221-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2013-04-25 747-202-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORTHRIDGE CA
2013-04-17 747-233-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 VAN NUYS CA
2013-04-05 747-477-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRBN BRBN CA
2013-03-28 747-233-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J VAN NUYS CA
2013-03-28 747-477-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BRBN BRBN 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.