NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

23 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2015-01-29 737-800-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2015-01-22 737-666-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELGIN TX
2015-01-16 737-444-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GEORGETOWN TX
2014-12-24 737-201-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C TAYLOR TX
2014-12-24 737-201-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C TAYLOR TX
2014-12-24 737-201-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C TAYLOR TX
2014-10-15 737-999-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BUDA TX
2014-10-13 737-444-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GEORGETOWN TX
2014-10-13 737-444-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GEORGETOWN TX
2014-10-13 737-444-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GEORGETOWN TX
2014-09-24 737-888-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C TAYLOR TX
2014-09-22 737-777-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C LEANDER TX
2014-09-22 737-777-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C LEANDER TX
2014-08-29 737-444-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GEORGETOWN TX
2014-08-21 737-444-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GEORGETOWN TX
2014-08-11 737-444-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GEORGETOWN TX
2014-07-02 737-999-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BUDA TX
2014-06-20 737-222-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-06-20 737-222-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-06-20 737-222-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-06-20 737-222-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-06-20 737-222-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2014-06-20 737-222-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2014-06-20 737-346-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2014-06-20 737-346-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2014-06-20 737-346-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2014-06-20 737-346-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2014-06-20 737-888-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TAYLOR TX
2014-06-19 737-666-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ELGIN TX
2014-06-17 737-333-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-06-17 737-703-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-06-17 737-703-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2014-06-05 737-704-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-06-05 737-704-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-06-05 737-704-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-06-05 737-704-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-06-05 737-704-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-06-05 737-704-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-06-05 737-704-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-05-23 737-777-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C LEANDER TX
2014-05-22 737-703-0XXX 0000–0999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-05-22 737-703-2XXX 2000–2999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-05-22 737-703-4XXX 4000–4999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-05-22 737-703-6XXX 6000–6999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-05-22 737-703-7XXX 7000–7999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-05-16 737-703-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 AUSTIN TX
2014-05-09 737-666-1XXX 1000–1999Assigned AUSTIN BESTLINE COMPANY 7551 ELGIN TX
2014-05-09 737-888-2XXX 2000–2999Assigned AUSTIN BESTLINE COMPANY 7551 TAYLOR TX
2014-05-05 737-888-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TAYLOR TX
2014-05-02 737-999-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 BUDA TX

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.