NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

11 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 281
ONVOY, LLC - TX 10
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
2011-01-27 281-940-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-01-27 281-940-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-01-27 281-968-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ALVIN TX
2011-01-26 281-247-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CHANNELVW TX
2011-01-26 281-845-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ARCOLA TX
2011-01-07 281-533-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C VLY LODGE TX
2011-01-07 281-783-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SHELDON TX
2011-01-07 281-942-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C SEABROOK TX
2010-12-29 281-829-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2010-12-29 281-849-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LANGHAMCRK TX
2010-12-28 281-676-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 BARKER TX
2010-12-22 281-742-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F WESTFIELD TX
2010-12-16 281-869-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 WESTFIELD TX
2010-12-16 281-869-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 WESTFIELD TX
2010-12-08 281-574-0XXX 0000–0999Assigned CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY 2109 KATY TX
2010-11-30 281-509-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-11-30 281-509-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-11-30 281-509-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-11-30 281-509-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-11-30 281-509-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-11-30 281-509-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-11-29 281-306-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SPLENDORA TX
2010-11-29 281-756-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ALVIN TX
2010-11-29 281-766-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PINEHURST TX
2010-11-18 281-809-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HSTNSUBURB TX
2010-11-18 281-809-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HSTNSUBURB TX
2010-11-18 281-809-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HSTNSUBURB TX
2010-11-18 281-809-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HSTNSUBURB TX
2010-11-12 281-978-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HSTNSUBURB TX
2010-11-09 281-674-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HSTNSUBURB TX
2010-11-03 281-215-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SHELDON TX
2010-11-03 281-346-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F VLY LODGE TX
2010-11-03 281-393-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LIVERPOOL TX
2010-11-03 281-760-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-10-29 281-742-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C WESTFIELD TX
2010-10-27 281-231-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WESTFIELD TX
2010-10-22 281-410-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F STAFFORD TX
2010-10-22 281-653-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SATSUMA TX
2010-10-22 281-819-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FRIENDSWD TX
2010-10-22 281-849-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LANGHAMCRK TX
2010-10-22 281-870-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2010-10-12 281-918-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 BEACH CITY TX
2010-10-04 281-297-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SPRING TX
2010-10-04 281-803-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F TOMBALL TX
2010-10-04 281-826-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F TOMBALL TX
2010-10-04 281-849-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LANGHAMCRK TX
2010-10-04 281-849-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LANGHAMCRK TX
2010-10-04 281-937-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SMITHERSLK TX
2010-10-01 281-545-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SMITHERSLK TX
2010-10-01 281-631-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BAMMEL TX

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.