NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 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
2004-04-20 972-375-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-04-20 972-375-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-04-20 972-375-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-04-20 972-375-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-04-20 972-408-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-04-20 972-522-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-04-20 972-697-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-04-20 972-809-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-04-20 972-809-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-04-02 972-961-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 ROCKWALL TX
2004-03-30 972-746-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2004-03-19 972-775-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 MIDLOTHIAN TX
2004-03-15 972-347-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PROSPER TX
2004-03-09 972-499-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2004-03-09 972-746-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2004-03-05 972-515-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C RED OAK TX
2004-03-05 972-552-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C FORNEY TX
2004-03-05 972-825-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C WAXAHACHIE TX
2004-03-05 972-872-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C ENNIS TX
2004-02-26 972-352-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-02-26 972-352-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-02-26 972-352-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-02-26 972-352-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-02-26 972-603-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-02-26 972-603-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-02-26 972-603-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-02-26 972-697-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-02-26 972-697-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-02-26 972-697-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-02-26 972-697-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-02-26 972-697-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-02-20 972-635-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ROYSE CITY TX
2004-02-18 972-213-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2004-02-18 972-213-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2004-02-18 972-213-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2004-02-18 972-746-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2004-02-18 972-746-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2004-02-09 972-369-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2004-01-26 972-890-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2004-01-26 972-890-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2004-01-26 972-890-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2004-01-26 972-890-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2004-01-26 972-890-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2004-01-19 972-268-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C WAXAHACHIE TX
2004-01-19 972-330-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C ENNIS TX
2004-01-19 972-746-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2004-01-19 972-746-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2004-01-13 972-357-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C FORNEY TX
2003-12-19 972-200-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2003-12-17 972-693-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI 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.