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
2016-12-06 747-275-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2016-11-28 747-214-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2016-11-28 747-218-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LACRSCENTA CA
2016-11-28 747-257-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2016-11-21 747-257-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GLENDALE CA
2016-11-21 747-267-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RESEDA CA
2016-11-16 747-241-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2016-11-16 747-241-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2016-11-15 747-257-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F GLENDALE CA
2016-11-15 747-266-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFN SPLV CA
2016-11-15 747-268-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PSDN LACN CA
2016-11-15 747-276-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F VAN NUYS CA
2016-11-14 747-260-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2016-11-10 747-267-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RESEDA CA
2016-11-08 747-216-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NORTHRIDGE CA
2016-11-08 747-216-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NORTHRIDGE CA
2016-11-08 747-257-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2016-11-08 747-257-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2016-11-08 747-263-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2016-11-07 747-274-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFN PACM CA
2016-11-07 747-274-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFN PACM CA
2016-11-04 747-276-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2016-10-31 747-215-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GLENDALE CA
2016-10-31 747-215-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GLENDALE CA
2016-10-31 747-217-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2016-10-31 747-217-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2016-10-31 747-252-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNFN GRHL CA
2016-10-31 747-252-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFN GRHL CA
2016-10-31 747-267-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RESEDA CA
2016-10-31 747-275-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2016-10-31 747-275-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2016-10-24 747-249-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C CANOGAPARK CA
2016-10-24 747-249-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C CANOGAPARK CA
2016-10-12 747-218-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LACRSCENTA CA
2016-10-12 747-275-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2016-10-12 747-275-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2016-10-07 747-218-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LACRSCENTA CA
2016-10-04 747-214-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2016-10-04 747-267-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C RESEDA CA
2016-10-04 747-267-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C RESEDA CA
2016-10-04 747-271-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2016-10-04 747-271-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2016-10-04 747-271-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2016-10-03 747-212-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C AGOURA CA
2016-10-03 747-212-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C AGOURA CA
2016-10-03 747-212-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C AGOURA CA
2016-10-03 747-283-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2016-10-03 747-283-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2016-09-22 747-274-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K SNFN PACM CA
2016-09-19 747-216-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NORTHRIDGE 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.