NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

23 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 737
ONVOY, LLC - TX 14
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 4
NEW CINGULAR WIRELESS PCS, LLC - IL 2
EXIANT COMMUNICATIONS LLC 1
BANDWIDTH.COM CLEC, LLC - TX 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
2019-03-20 737-255-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-03-20 737-255-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-03-20 737-255-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-03-20 737-255-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-03-20 737-255-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-03-19 737-900-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J AUSTIN TX
2019-03-04 737-256-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2019-03-04 737-256-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2019-03-04 737-256-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2019-03-01 737-255-1XXX 1000–1999Assigned EXIANT COMMUNICATIONS LLC 114J AUSTIN TX
2019-02-19 737-249-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2019-02-14 737-235-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-02-14 737-235-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-02-14 737-235-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-02-14 737-239-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-02-14 737-239-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-02-14 737-242-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-02-14 737-242-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-02-14 737-242-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-02-14 737-246-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-02-14 737-249-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-02-06 737-232-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ELGIN TX
2019-02-04 737-235-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2019-01-24 737-253-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GEORGETOWN TX
2019-01-16 737-246-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2019-01-16 737-246-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2019-01-16 737-246-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2019-01-16 737-246-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2019-01-16 737-246-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2019-01-16 737-246-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2019-01-16 737-246-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2019-01-16 737-246-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2019-01-16 737-249-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2019-01-16 737-249-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2019-01-16 737-249-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2019-01-04 737-242-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-01-04 737-242-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2018-12-12 737-242-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2018-12-12 737-242-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2018-12-06 737-238-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C BERTRAM TX
2018-12-06 737-238-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C BERTRAM TX
2018-12-06 737-238-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C BERTRAM TX
2018-12-06 737-238-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C BERTRAM TX
2018-11-28 737-260-2XXX 2000–2999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F DRIPPNGSPG TX
2018-11-28 737-837-1XXX 1000–1999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F TAYLOR TX
2018-11-27 737-302-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 SMITHVILLE TX
2018-11-21 737-637-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F THORNDTHRL TX
2018-11-21 737-637-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F THORNDTHRL TX
2018-11-20 737-238-2XXX 2000–2999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F BERTRAM TX
2018-11-20 737-248-2XXX 2000–2999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F KYLE 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.