NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

11 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 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
2010-05-27 281-766-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PINEHURST TX
2010-05-27 281-836-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BAMMEL TX
2010-05-27 281-836-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BAMMEL TX
2010-05-27 281-870-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2010-05-27 281-886-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2010-05-27 281-886-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2010-05-27 281-892-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2010-05-27 281-896-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2010-05-27 281-899-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2010-05-27 281-899-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2010-05-27 281-901-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2010-05-27 281-941-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LA PORTE TX
2010-05-26 281-746-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 CYPRESS TX
2010-05-26 281-746-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 CYPRESS TX
2010-05-20 281-661-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2010-05-12 281-301-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2010-05-12 281-885-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2010-05-12 281-891-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2010-05-11 281-742-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 WESTFIELD TX
2010-04-22 281-887-0XXX 0000–0999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 SATSUMA TX
2010-04-22 281-887-1XXX 1000–1999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 SATSUMA TX
2010-04-22 281-887-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 SATSUMA TX
2010-04-22 281-887-3XXX 3000–3999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 SATSUMA TX
2010-04-22 281-887-4XXX 4000–4999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 SATSUMA TX
2010-04-22 281-887-5XXX 5000–5999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 SATSUMA TX
2010-04-22 281-887-6XXX 6000–6999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 SATSUMA TX
2010-04-22 281-887-7XXX 7000–7999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 SATSUMA TX
2010-04-22 281-887-8XXX 8000–8999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 SATSUMA TX
2010-04-22 281-887-9XXX 9000–9999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 SATSUMA TX
2010-04-20 281-815-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C LANGHAMCRK TX
2010-04-16 281-712-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KATY TX
2010-04-15 281-824-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C ALVIN TX
2010-04-13 281-836-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C BAMMEL TX
2010-03-23 281-786-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 APOLLO TX
2010-03-04 281-305-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PINEHURST TX
2010-03-02 281-756-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ALVIN TX
2010-03-02 281-891-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BAMMEL TX
2010-02-26 281-736-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2010-02-26 281-736-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2010-02-23 281-739-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BAYTOWN TX
2010-02-19 281-653-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C SATSUMA TX
2010-02-18 281-241-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DEER PARK TX
2010-02-18 281-410-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F STAFFORD TX
2010-02-18 281-417-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LA PORTE TX
2010-02-18 281-645-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F WESTFIELD TX
2010-02-18 281-766-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PINEHURST TX
2010-02-18 281-845-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ARCOLA TX
2010-02-18 281-968-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ALVIN TX
2010-02-11 281-317-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FRIENDSWD TX
2010-02-11 281-317-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FRIENDSWD 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.