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
2011-05-11 281-619-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2011-05-11 281-619-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2011-05-11 281-619-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2011-05-05 281-937-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C SMITHERSLK TX
2011-04-28 281-357-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C TOMBALL TX
2011-04-26 281-784-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F WESTFIELD TX
2011-04-26 281-969-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F STAFFORD TX
2011-04-25 281-544-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-04-25 281-584-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-04-25 281-584-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-04-25 281-588-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-04-18 281-819-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FRIENDSWD TX
2011-04-18 281-819-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FRIENDSWD TX
2011-04-14 281-619-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2011-04-04 281-978-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HSTNSUBURB TX
2011-03-30 281-249-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-03-30 281-310-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-03-30 281-310-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-03-30 281-406-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-03-30 281-406-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-03-30 281-406-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-03-30 281-436-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-03-30 281-454-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-03-30 281-504-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-03-30 281-506-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-03-26 281-549-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KEMAH TX
2011-03-15 281-346-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C VLY LODGE TX
2011-03-15 281-533-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C VLY LODGE TX
2011-03-15 281-842-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C LA PORTE TX
2011-03-15 281-941-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LA PORTE TX
2011-03-15 281-993-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C FRIENDSWD TX
2011-03-15 281-993-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C FRIENDSWD TX
2011-03-01 281-310-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HSTNSUBURB TX
2011-03-01 281-310-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HSTNSUBURB TX
2011-02-25 281-207-9XXX 9000–9999Assigned ETS TELEPHONE COMPANY, INC. 2091 SUGAR LAND TX
2011-02-25 281-742-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F WESTFIELD TX
2011-02-23 281-766-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PINEHURST TX
2011-02-16 281-606-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HSTNSUBURB TX
2011-02-16 281-606-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HSTNSUBURB TX
2011-01-27 281-305-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PINEHURST TX
2011-01-27 281-306-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SPLENDORA TX
2011-01-27 281-402-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LA PORTE TX
2011-01-27 281-519-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MANVEL TX
2011-01-27 281-560-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-01-27 281-594-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-01-27 281-698-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2011-01-27 281-721-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-01-27 281-912-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2011-01-27 281-937-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SMITHERSLK TX
2011-01-27 281-940-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB 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.