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
2013-12-11 817-345-8XXX 8000–8999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 0701 NRICHLDHLS TX
2013-12-10 817-806-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 FORT WORTH TX
2013-11-12 817-402-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C ALVARADO TX
2013-11-12 817-402-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C ALVARADO TX
2013-11-08 817-857-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C EULESS TX
2013-11-08 817-857-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C EULESS TX
2013-09-25 817-243-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANBURY TX
2013-09-06 817-952-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K EULESS TX
2013-09-05 817-898-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C KELLER TX
2013-09-04 817-349-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C FORT WORTH TX
2013-09-03 817-541-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C ROANOKE TX
2013-08-16 817-533-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C ARLINGTON TX
2013-08-15 817-609-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEATHERFD TX
2013-08-05 817-783-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C ALVARADO TX
2013-07-31 817-203-9XXX 9000–9999Assigned IP HORIZON LLC 515J GRAPEVINE TX
2013-07-31 817-666-4XXX 4000–4999Assigned IP HORIZON LLC 515J CLEBURNE TX
2013-07-31 817-947-9XXX 9000–9999Assigned IP HORIZON LLC 515J KENNEDALE TX
2013-07-31 817-968-9XXX 9000–9999Assigned IP HORIZON LLC 515J NRICHLDHLS TX
2013-07-18 817-439-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FORT WORTH TX
2013-07-18 817-569-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 FORT WORTH TX
2013-07-18 817-862-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FORT WORTH TX
2013-06-28 817-774-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEBURNE TX
2013-06-28 817-856-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ARLINGTON TX
2013-06-28 817-964-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANBURY TX
2013-06-27 817-361-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J FORT WORTH TX
2013-06-27 817-617-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J ARLINGTON TX
2013-06-13 817-615-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C FORT WORTH TX
2013-06-12 817-708-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FORT WORTH TX
2013-05-31 817-587-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J ALVARADO TX
2013-05-24 817-756-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GRAPEVINE TX
2013-05-23 817-420-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FORT WORTH TX
2013-05-23 817-767-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 ROANOKE TX
2013-05-17 817-887-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FORT WORTH TX
2013-05-06 817-759-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FORT WORTH TX
2013-05-06 817-849-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K NRICHLDHLS TX
2013-05-03 817-363-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORT WORTH TX
2013-04-25 817-677-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 RENO TX
2013-04-16 817-752-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K AZLE TX
2013-04-11 817-609-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WEATHERFD TX
2013-04-08 817-841-1XXX 1000–1999Assigned IP HORIZON LLC 515J FORT WORTH TX
2013-04-08 817-864-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F EULESS TX
2013-04-08 817-864-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F EULESS TX
2013-04-08 817-952-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F EULESS TX
2013-04-03 817-873-0XXX 0000–0999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F GRAPEVINE TX
2013-04-03 817-873-1XXX 1000–1999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F GRAPEVINE TX
2013-04-01 817-782-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C FORT WORTH TX
2013-03-29 817-345-0XXX 0000–0999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F NRICHLDHLS TX
2013-03-29 817-435-8XXX 8000–8999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F MANSFIELD TX
2013-03-29 817-435-9XXX 9000–9999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F MANSFIELD TX
2013-03-29 817-464-8XXX 8000–8999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F ROANOKE 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.