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
2014-10-30 281-258-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-258-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-310-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-372-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-406-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-406-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-406-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-416-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-454-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-464-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-506-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-594-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-670-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-759-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-30 281-922-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2014-10-29 281-406-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2014-10-28 281-771-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 SPRING TX
2014-10-28 281-771-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 SPRING TX
2014-10-28 281-771-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 SPRING TX
2014-10-28 281-771-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 SPRING TX
2014-10-21 281-706-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HUMBLE TX
2014-10-07 281-393-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C LIVERPOOL TX
2014-10-07 281-399-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C SPLENDORA TX
2014-10-07 281-399-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C SPLENDORA TX
2014-10-03 281-982-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 WESTFIELD TX
2014-10-02 281-707-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAYTOWN TX
2014-10-02 281-707-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAYTOWN TX
2014-10-02 281-707-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAYTOWN TX
2014-10-02 281-707-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 BAYTOWN TX
2014-10-02 281-746-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C CYPRESS TX
2014-09-25 281-549-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J KEMAH TX
2014-09-19 281-238-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C RICHMNRNBG TX
2014-09-19 281-393-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 LIVERPOOL TX
2014-09-19 281-717-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C BARKER TX
2014-09-17 281-771-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPRING TX
2014-09-10 281-709-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C APOLLO TX
2014-09-10 281-783-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SHELDON TX
2014-09-10 281-853-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C APOLLO TX
2014-09-04 281-898-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 APOLLO TX
2014-09-03 281-771-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C SPRING TX
2014-09-03 281-771-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C SPRING TX
2014-08-22 281-502-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J HIGHLANDS TX
2014-08-22 281-771-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 SPRING TX
2014-08-22 281-967-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 DICKINSON TX
2014-08-22 281-967-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 DICKINSON TX
2014-08-22 281-967-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 DICKINSON TX
2014-08-22 281-967-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 DICKINSON TX
2014-08-20 281-747-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PORTER TX
2014-08-13 281-709-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 APOLLO TX
2014-07-31 281-713-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HUMBLE 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.