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
2010-10-01 281-816-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FRIENDSWD TX
2010-09-20 281-875-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2010-09-20 281-876-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2010-09-16 281-971-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2010-09-16 281-971-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2010-09-14 281-746-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 CYPRESS TX
2010-09-14 281-758-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 CYPRESS TX
2010-09-03 281-758-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CYPRESS TX
2010-08-27 281-742-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 WESTFIELD TX
2010-08-24 281-829-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C BARKER TX
2010-08-17 281-574-7XXX 7000–7999Assigned CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY 2109 KATY TX
2010-08-17 281-884-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J DEER PARK TX
2010-08-17 281-978-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-08-17 281-978-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-08-10 281-803-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 TOMBALL TX
2010-08-06 281-231-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F WESTFIELD TX
2010-08-06 281-516-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F TOMBALL TX
2010-08-06 281-616-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2010-08-06 281-638-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LANGHAMCRK TX
2010-08-06 281-640-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SATSUMA TX
2010-08-06 281-845-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ARCOLA TX
2010-08-06 281-968-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ALVIN TX
2010-07-22 281-717-5XXX 5000–5999Assigned SOUTHWESTERN BELL 9533 BARKER TX
2010-07-20 281-912-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-07-20 281-940-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-07-19 281-569-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2010-07-19 281-716-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2010-07-19 281-716-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2010-07-19 281-716-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2010-07-14 281-306-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SPLENDORA TX
2010-07-14 281-694-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SEABROOK TX
2010-07-13 281-400-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FRIENDSWD TX
2010-07-09 281-661-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2010-07-09 281-661-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2010-07-06 281-661-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2010-06-21 281-670-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HSTNSUBURB TX
2010-06-14 281-716-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C BAMMEL TX
2010-06-14 281-912-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2010-06-14 281-982-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C WESTFIELD TX
2010-06-14 281-994-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C BARKER TX
2010-06-09 281-661-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2010-06-08 281-758-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 CYPRESS TX
2010-06-08 281-758-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 CYPRESS TX
2010-05-27 281-410-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F STAFFORD TX
2010-05-27 281-607-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MANVEL TX
2010-05-27 281-638-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F LANGHAMCRK TX
2010-05-27 281-671-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SATSUMA TX
2010-05-27 281-675-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2010-05-27 281-715-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DEER PARK TX
2010-05-27 281-749-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB 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.