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
2017-12-20 747-244-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C NORTHRIDGE CA
2017-12-14 747-259-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CANOGAPARK CA
2017-12-14 747-259-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CANOGAPARK CA
2017-12-14 747-259-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CANOGAPARK CA
2017-12-14 747-259-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CANOGAPARK CA
2017-12-14 747-259-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CANOGAPARK CA
2017-12-04 747-344-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2017-12-04 747-344-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2017-12-04 747-344-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2017-11-27 747-269-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D SNFN SPLV CA
2017-11-27 747-269-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D SNFN SPLV CA
2017-11-21 747-344-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C BRBN BRBN CA
2017-11-10 747-259-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C CANOGAPARK CA
2017-11-10 747-259-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C CANOGAPARK CA
2017-11-10 747-291-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRBN BRBN CA
2017-11-09 747-267-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C RESEDA CA
2017-11-09 747-609-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GLENDALE CA
2017-11-06 747-239-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFN GRHL CA
2017-11-06 747-259-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CANOGAPARK CA
2017-10-20 747-240-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C GLENDALE CA
2017-10-20 747-240-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C GLENDALE CA
2017-10-19 747-269-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D SNFN SPLV CA
2017-10-18 747-262-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C VAN NUYS CA
2017-10-18 747-262-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C VAN NUYS CA
2017-10-05 747-252-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFN GRHL CA
2017-09-28 747-240-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GLENDALE CA
2017-09-21 747-218-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LACRSCENTA CA
2017-09-14 747-262-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D VAN NUYS CA
2017-09-13 747-259-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CANOGAPARK CA
2017-09-12 747-219-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 AGOURA CA
2017-09-12 747-274-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D SNFN PACM CA
2017-09-11 747-240-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GLENDALE CA
2017-08-22 747-755-0XXX 0000–0999Assigned INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H NORTHRIDGE CA
2017-08-18 747-261-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BRBN BRBN CA
2017-08-18 747-291-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 BRBN BRBN CA
2017-08-17 747-240-7XXX 7000–7999Assigned INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H GLENDALE CA
2017-08-17 747-276-1XXX 1000–1999Assigned INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H VAN NUYS CA
2017-08-16 747-244-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NORTHRIDGE CA
2017-08-15 747-218-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LACRSCENTA CA
2017-08-15 747-219-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2017-08-15 747-219-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2017-07-28 747-291-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BRBN BRBN CA
2017-07-21 747-276-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 VAN NUYS CA
2017-07-19 747-240-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D GLENDALE CA
2017-07-19 747-240-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D GLENDALE CA
2017-07-17 747-216-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 NORTHRIDGE CA
2017-06-27 747-214-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NO HOLLYWD CA
2017-06-27 747-240-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GLENDALE CA
2017-06-22 747-240-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GLENDALE CA
2017-06-09 747-219-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F AGOURA 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.