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
2011-07-28 817-406-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AZLE TX
2011-07-27 817-330-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KENNEDALE TX
2011-07-27 817-494-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EULESS TX
2011-07-27 817-666-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEBURNE TX
2011-07-27 817-666-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEBURNE TX
2011-07-21 817-317-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT WORTH TX
2011-07-21 817-381-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F RENO TX
2011-07-20 817-381-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F RENO TX
2011-07-01 817-476-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C KENNEDALE TX
2011-06-30 817-666-0XXX 0000–0999Assigned METROPCS, INC. 5562 CLEBURNE TX
2011-06-28 817-240-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEBURNE TX
2011-06-28 817-586-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2011-06-28 817-586-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2011-06-28 817-586-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2011-06-28 817-709-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2011-06-17 817-564-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2011-06-17 817-653-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2011-06-17 817-687-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2011-06-17 817-687-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2011-06-17 817-718-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2011-06-17 817-888-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2011-06-17 817-888-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2011-06-13 817-435-0XXX 0000–0999Assigned METROPCS, INC. 5562 MANSFIELD TX
2011-06-13 817-805-9XXX 9000–9999Assigned METROPCS, INC. 5562 ARLINGTON TX
2011-06-13 817-983-2XXX 2000–2999Assigned METROPCS, INC. 5562 ARLINGTON TX
2011-06-09 817-693-2XXX 2000–2999Assigned SOUTHWESTERN BELL 9533 ROANOKE TX
2011-06-07 817-730-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C FORT WORTH TX
2011-06-04 817-494-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F EULESS TX
2011-06-04 817-527-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GRAPEVINE TX
2011-06-04 817-953-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FORT WORTH TX
2011-06-04 817-953-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FORT WORTH TX
2011-06-04 817-953-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FORT WORTH TX
2011-06-04 817-953-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FORT WORTH TX
2011-06-04 817-953-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FORT WORTH TX
2011-06-04 817-953-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FORT WORTH TX
2011-05-27 817-388-0XXX 0000–0999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 GRAPEVINE TX
2011-05-27 817-388-1XXX 1000–1999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 GRAPEVINE TX
2011-05-27 817-388-2XXX 2000–2999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 GRAPEVINE TX
2011-05-27 817-388-3XXX 3000–3999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 GRAPEVINE TX
2011-05-27 817-388-4XXX 4000–4999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 GRAPEVINE TX
2011-05-27 817-388-5XXX 5000–5999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 GRAPEVINE TX
2011-05-27 817-388-6XXX 6000–6999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 GRAPEVINE TX
2011-05-27 817-388-7XXX 7000–7999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 GRAPEVINE TX
2011-05-27 817-388-8XXX 8000–8999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 GRAPEVINE TX
2011-05-27 817-388-9XXX 9000–9999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 GRAPEVINE TX
2011-05-23 817-398-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K NRICHLDHLS TX
2011-05-23 817-406-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AZLE TX
2011-05-23 817-422-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K ARLINGTON TX
2011-05-23 817-435-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K MANSFIELD TX
2011-05-23 817-476-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K KENNEDALE 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.