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
2014-11-19 747-231-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C GLENDALE CA
2014-11-19 747-245-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2014-11-19 747-245-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2014-11-19 747-245-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2014-11-19 747-245-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2014-11-18 747-234-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2014-11-18 747-234-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2014-11-18 747-234-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2014-11-18 747-234-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2014-11-13 747-998-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VAN NUYS CA
2014-11-07 747-231-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2014-11-07 747-231-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2014-11-05 747-236-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFN SPLV CA
2014-11-05 747-334-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E AGOURA CA
2014-11-04 747-228-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GLENDALE CA
2014-10-31 747-242-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CANOGAPARK CA
2014-10-30 747-235-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NORTHRIDGE CA
2014-10-30 747-235-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NORTHRIDGE CA
2014-10-30 747-235-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NORTHRIDGE CA
2014-10-24 747-234-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BRBN BRBN CA
2014-10-24 747-234-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C BRBN BRBN CA
2014-10-21 747-234-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BRBN BRBN CA
2014-10-20 747-234-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 BRBN BRBN CA
2014-10-16 747-998-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2014-10-16 747-998-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2014-10-16 747-998-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2014-10-16 747-998-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2014-10-15 747-242-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K CANOGAPARK CA
2014-10-14 747-242-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2014-10-14 747-242-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2014-10-13 747-242-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CANOGAPARK CA
2014-10-10 747-228-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 GLENDALE CA
2014-10-10 747-242-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CANOGAPARK CA
2014-10-10 747-242-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CANOGAPARK CA
2014-10-08 747-322-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFN SNFN CA
2014-10-03 747-227-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SNFN PACM CA
2014-10-03 747-227-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNFN PACM CA
2014-10-03 747-242-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CANOGAPARK CA
2014-10-01 747-223-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BRBN SNVY CA
2014-09-30 747-227-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFN PACM CA
2014-09-30 747-229-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BRBN BRBN CA
2014-09-30 747-229-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BRBN BRBN CA
2014-09-30 747-229-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BRBN BRBN CA
2014-09-30 747-232-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFN GRHL CA
2014-09-29 747-998-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C VAN NUYS CA
2014-09-29 747-998-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C VAN NUYS CA
2014-09-18 747-229-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2014-09-18 747-229-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2014-09-18 747-229-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2014-09-18 747-229-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 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.