NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

1 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 972
NEW CINGULAR WIRELESS PCS, LLC - IL 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
2018-03-27 972-942-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2018-03-14 972-267-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DALLAS TX
2018-03-14 972-290-9XXX 9000–9999Assigned METROPCS, INC. 5562 DALLAS TX
2018-03-14 972-503-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DALLAS TX
2018-03-12 972-371-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2018-03-12 972-454-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2018-03-12 972-972-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2018-03-12 972-972-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2018-03-06 972-703-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TERRELL TX
2018-03-05 972-440-8XXX 8000–8999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 CARROLLTON TX
2018-02-27 972-269-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2018-02-27 972-269-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2018-02-27 972-269-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2018-02-22 972-936-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2018-02-22 972-936-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2018-02-22 972-936-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2018-02-22 972-936-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2018-02-22 972-936-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2018-02-22 972-936-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2018-02-22 972-936-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2018-02-22 972-936-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2018-02-22 972-936-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2018-02-22 972-936-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2018-02-08 972-972-0XXX 0000–0999Assigned METROPCS, INC. 5562 DALLAS TX
2018-02-08 972-972-5XXX 5000–5999Assigned METROPCS, INC. 5562 DALLAS TX
2018-01-29 972-440-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C CARROLLTON TX
2018-01-29 972-440-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C CARROLLTON TX
2018-01-16 972-876-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ENNIS TX
2018-01-16 972-878-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ENNIS TX
2018-01-15 972-645-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ITALY TX
2018-01-04 972-440-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CARROLLTON TX
2018-01-02 972-266-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2018-01-02 972-266-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2018-01-02 972-266-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2018-01-02 972-266-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2018-01-02 972-269-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2017-12-22 972-972-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2017-12-22 972-972-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2017-12-19 972-469-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 FRISCO TX
2017-12-13 972-282-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2017-12-13 972-282-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2017-12-13 972-282-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2017-12-13 972-282-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2017-12-13 972-282-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2017-12-13 972-282-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2017-12-13 972-282-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2017-12-13 972-282-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2017-12-13 972-901-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2017-12-13 972-901-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2017-12-13 972-901-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI 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.