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
2011-05-23 817-527-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K GRAPEVINE TX
2011-05-23 817-554-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K EULESS TX
2011-05-23 817-687-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K GLENDALE TX
2011-05-19 817-755-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SPRINGTOWN TX
2011-05-19 817-755-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SPRINGTOWN TX
2011-05-18 817-666-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEBURNE TX
2011-05-05 817-672-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C KENNEDALE TX
2011-05-05 817-987-5XXX 5000–5999Assigned METROPCS, INC. 5562 ARLINGTON TX
2011-04-26 817-631-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F RENO TX
2011-04-20 817-508-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C EULESS TX
2011-04-18 817-805-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
2011-04-18 817-805-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
2011-04-18 817-805-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
2011-04-18 817-805-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
2011-04-18 817-805-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
2011-04-18 817-809-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GRAPEVINE TX
2011-04-18 817-809-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GRAPEVINE TX
2011-04-06 817-631-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C RENO TX
2011-04-06 817-693-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ROANOKE TX
2011-03-21 817-668-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C SPRINGTOWN TX
2011-03-15 817-442-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GRAPEVINE TX
2011-03-15 817-541-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ROANOKE TX
2011-03-14 817-205-4XXX 4000–4999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-03-14 817-231-1XXX 1000–1999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-03-14 817-255-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-03-14 817-302-6XXX 6000–6999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-03-14 817-317-6XXX 6000–6999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-03-14 817-484-7XXX 7000–7999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-03-14 817-484-8XXX 8000–8999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-03-14 817-585-3XXX 3000–3999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-03-14 817-585-6XXX 6000–6999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-03-14 817-730-1XXX 1000–1999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-03-08 817-494-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EULESS TX
2011-03-01 817-585-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT WORTH TX
2011-03-01 817-585-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT WORTH TX
2011-02-25 817-968-6XXX 6000–6999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2011-02-25 817-968-8XXX 8000–8999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2011-02-17 817-402-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ALVARADO TX
2011-02-17 817-710-9XXX 9000–9999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-02-17 817-768-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-02-17 817-769-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-02-17 817-820-9XXX 9000–9999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-02-17 817-852-9XXX 9000–9999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-02-16 817-404-3XXX 3000–3999Assigned METROPCS, INC. 5562 ARLINGTON TX
2011-02-16 817-779-1XXX 1000–1999Assigned METROPCS, INC. 5562 MANSFIELD TX
2011-02-16 817-842-7XXX 7000–7999Assigned METROPCS, INC. 5562 MANSFIELD TX
2011-02-16 817-916-8XXX 8000–8999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F FORT WORTH TX
2011-02-16 817-987-3XXX 3000–3999Assigned METROPCS, INC. 5562 ARLINGTON TX
2011-02-03 817-585-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT WORTH TX
2011-02-03 817-655-1XXX 1000–1999Assigned METROPCS, INC. 5562 FORT WORTH 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.