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
2014-06-18 713-352-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F APOLLO TX
2014-06-16 713-352-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 APOLLO TX
2014-04-14 713-321-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2014-04-14 713-742-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2014-04-07 713-321-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-04-07 713-321-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-04-07 713-321-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-04-07 713-561-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-04-07 713-561-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-04-07 713-597-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-04-07 713-597-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-04-07 713-597-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-03-18 713-325-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-03-18 713-325-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-03-18 713-325-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-03-18 713-438-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-03-18 713-438-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-03-18 713-497-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-03-18 713-497-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-03-18 713-497-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-03-18 713-497-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2014-03-12 713-352-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F APOLLO TX
2014-03-12 713-352-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F APOLLO TX
2014-03-04 713-352-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J APOLLO TX
2014-02-27 713-325-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2014-02-03 713-325-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2014-01-22 713-597-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2014-01-22 713-597-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2014-01-22 713-597-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2014-01-22 713-597-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2014-01-22 713-597-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2014-01-22 713-597-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2014-01-22 713-597-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2014-01-21 713-325-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2014-01-21 713-325-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2014-01-21 713-325-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2014-01-21 713-325-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2014-01-21 713-325-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2013-12-02 713-352-4XXX 4000–4999Assigned GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 APOLLO TX
2013-10-21 713-766-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2013-10-21 713-766-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2013-10-21 713-766-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2013-10-09 713-999-8XXX 8000–8999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F HUFFMAN TX
2013-10-09 713-999-9XXX 9000–9999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F HUFFMAN TX
2013-09-24 713-766-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2013-09-24 713-766-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2013-09-20 713-766-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2013-09-20 713-766-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2013-09-20 713-766-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2013-09-20 713-766-5XXX 5000–5999Assigned 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.