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
2020-01-23 737-266-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SAN MARCOS TX
2020-01-20 737-500-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-01-20 737-500-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2020-01-20 737-770-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BUDA TX
2020-01-16 737-273-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2020-01-15 737-273-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2020-01-15 737-273-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2020-01-13 737-251-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BURNET TX
2020-01-10 737-265-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KYLE TX
2020-01-06 737-356-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GEORGETOWN TX
2020-01-02 737-264-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LOCKHART TX
2020-01-02 737-264-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LOCKHART TX
2020-01-02 737-264-9XXX 9000–9999Assigned METROPCS, INC. 5562 LOCKHART TX
2020-01-02 737-348-6XXX 6000–6999Assigned FRACTEL, LLC 965H BASTROP TX
2019-12-30 737-373-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C SAN MARCOS TX
2019-12-26 737-356-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GEORGETOWN TX
2019-12-23 737-273-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-12-23 737-273-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-12-18 737-263-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-12-18 737-263-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-12-18 737-263-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-12-18 737-263-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-12-18 737-263-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-12-18 737-263-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F AUSTIN TX
2019-12-13 737-263-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2019-12-13 737-263-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2019-12-13 737-263-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2019-12-13 737-263-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2019-12-10 737-256-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2019-12-10 737-256-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2019-12-10 737-710-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2019-12-10 737-710-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2019-12-03 737-510-0XXX 0000–0999Assigned TELNYX LLC 073H BERTRAM TX
2019-12-02 737-259-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUTTO TX
2019-12-02 737-259-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUTTO TX
2019-11-26 737-256-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J AUSTIN TX
2019-11-22 737-256-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J AUSTIN TX
2019-11-22 737-256-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J AUSTIN TX
2019-11-19 737-256-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-11-19 737-256-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-10-30 737-261-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2019-10-30 737-261-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2019-10-30 737-637-8XXX 8000–8999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F THORNDTHRL TX
2019-10-25 737-710-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-10-25 737-710-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2019-10-24 737-500-1XXX 1000–1999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F BASTROP TX
2019-10-21 737-702-7XXX 7000–7999Assigned CSC VOICE, LLC 612K GRANGER TX
2019-10-17 737-262-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2019-10-11 737-261-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2019-10-09 737-710-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H AUSTIN 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.