NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 817
ONVOY, LLC - TX 2
EXIANT COMMUNICATIONS LLC 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
2010-11-05 817-863-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLINGTON TX
2010-11-05 817-863-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLINGTON TX
2010-10-28 817-438-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EULESS TX
2010-10-27 817-203-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GRAPEVINE TX
2010-10-26 817-363-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT WORTH TX
2010-10-26 817-363-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT WORTH TX
2010-10-26 817-363-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT WORTH TX
2010-10-26 817-363-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT WORTH TX
2010-10-26 817-363-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT WORTH TX
2010-10-26 817-363-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT WORTH TX
2010-10-26 817-369-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C NRICHLDHLS TX
2010-10-26 817-409-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C ALVARADO TX
2010-10-26 817-508-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 EULESS TX
2010-10-26 817-585-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT WORTH TX
2010-10-26 817-585-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT WORTH TX
2010-10-26 817-616-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C ATLAS TX
2010-10-26 817-618-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C KENNEDALE TX
2010-10-26 817-666-6XXX 6000–6999Assigned EVOLVE CELLULAR, INC. 139F CLEBURNE TX
2010-10-26 817-889-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C GLENDALE TX
2010-10-25 817-890-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ROANOKE TX
2010-10-25 817-890-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C ROANOKE TX
2010-10-25 817-890-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ROANOKE TX
2010-10-25 817-890-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ROANOKE TX
2010-10-25 817-890-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ROANOKE TX
2010-10-25 817-890-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ROANOKE TX
2010-10-25 817-890-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ROANOKE TX
2010-10-22 817-203-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GRAPEVINE TX
2010-10-22 817-666-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEBURNE TX
2010-10-22 817-719-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ARLINGTON TX
2010-10-22 817-823-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ARLINGTON TX
2010-10-20 817-642-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ARLINGTON TX
2010-10-20 817-659-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CLEBURNE TX
2010-10-20 817-760-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CLEBURNE TX
2010-10-07 817-350-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT WORTH TX
2010-10-07 817-363-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT WORTH TX
2010-10-07 817-363-3XXX 3000–3999Assigned METROPCS, INC. 5562 FORT WORTH TX
2010-10-07 817-363-6XXX 6000–6999Assigned METROPCS, INC. 5562 FORT WORTH TX
2010-10-07 817-717-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT WORTH TX
2010-09-23 817-382-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SPRINGTOWN TX
2010-09-22 817-642-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C ARLINGTON TX
2010-09-16 817-554-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J EULESS TX
2010-09-10 817-710-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C FORT WORTH TX
2010-09-10 817-710-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C FORT WORTH TX
2010-09-09 817-901-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEATHERFD TX
2010-09-08 817-823-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARLINGTON TX
2010-09-08 817-823-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARLINGTON TX
2010-09-08 817-900-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J FORT WORTH TX
2010-08-26 817-484-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FORT WORTH TX
2010-08-26 817-484-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FORT WORTH TX
2010-08-26 817-524-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX

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.