NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 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, all time — NPA 713
AERIAL COMMUNICATIONS, INC. 409
ONVOY, LLC - TX 242
NEW CINGULAR WIRELESS PCS, LLC - IL 199
LEVEL 3 COMMUNICATIONS, LLC - TX 117
SOUTHWESTERN BELL 102
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
2010-10-04 713-701-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2010-10-04 713-701-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2010-10-04 713-701-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2010-09-20 713-474-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-09-20 713-474-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-09-20 713-474-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-09-20 713-474-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-09-16 713-510-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2010-09-16 713-510-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2010-09-08 713-534-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2010-09-08 713-609-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2010-09-08 713-623-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2010-09-08 713-726-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2010-09-08 713-820-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2010-09-07 713-496-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2010-08-17 713-538-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-08-17 713-538-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-08-17 713-538-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-08-17 713-538-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-08-17 713-538-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2010-08-06 713-338-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J HOUSTON TX
2010-07-30 713-338-3XXX 3000–3999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 HOUSTON TX
2010-07-20 713-274-0XXX 0000–0999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-07-20 713-274-1XXX 1000–1999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-07-20 713-274-2XXX 2000–2999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-07-20 713-274-3XXX 3000–3999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-07-20 713-274-4XXX 4000–4999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-07-20 713-274-5XXX 5000–5999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-07-20 713-274-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-07-20 713-274-7XXX 7000–7999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-07-20 713-274-8XXX 8000–8999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-07-20 713-274-9XXX 9000–9999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-07-14 713-338-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2010-07-09 713-496-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HOUSTON TX
2010-07-09 713-496-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HOUSTON TX
2010-07-09 713-496-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HOUSTON TX
2010-07-09 713-496-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HOUSTON TX
2010-07-09 713-496-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HOUSTON TX
2010-07-09 713-496-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HOUSTON TX
2010-07-06 713-918-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2010-05-19 713-338-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2010-05-18 713-338-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2010-04-22 713-496-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2010-04-06 713-338-4XXX 4000–4999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-04-06 713-338-5XXX 5000–5999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-04-06 713-338-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-04-06 713-338-7XXX 7000–7999Assigned SOUTHWESTERN BELL 9533 HOUSTON TX
2010-04-01 713-575-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2010-04-01 713-575-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C HSTNSUBURB TX
2010-03-02 713-469-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON 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.