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
2005-01-11 972-955-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2005-01-07 972-375-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2005-01-07 972-890-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2005-01-07 972-900-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2005-01-05 972-200-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2005-01-04 972-838-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MCKINNEY TX
2005-01-03 972-533-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2005-01-03 972-533-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2005-01-03 972-533-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2005-01-03 972-533-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2005-01-03 972-533-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2005-01-03 972-837-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MCKINNEY TX
2004-12-28 972-951-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IRVING TX
2004-12-28 972-951-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IRVING TX
2004-12-28 972-951-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IRVING TX
2004-12-28 972-951-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IRVING TX
2004-12-28 972-951-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IRVING TX
2004-12-28 972-951-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IRVING TX
2004-12-20 972-649-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 ALLEN TX
2004-12-17 972-391-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C DALLAS TX
2004-12-07 972-821-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 IRVING TX
2004-12-07 972-821-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 IRVING TX
2004-12-02 972-921-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAXAHACHIE TX
2004-12-02 972-921-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAXAHACHIE TX
2004-12-02 972-921-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAXAHACHIE TX
2004-11-18 972-704-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FRISCO TX
2004-11-02 972-310-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-11-02 972-310-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2004-10-29 972-782-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FARMERSVL TX
2004-10-26 972-310-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2004-10-26 972-310-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2004-10-22 972-786-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2004-10-22 972-786-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2004-10-22 972-786-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2004-10-22 972-837-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MCKINNEY TX
2004-10-14 972-532-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C DALLAS TX
2004-10-08 972-310-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2004-10-08 972-310-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2004-10-08 972-388-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C DALLAS TX
2004-10-06 972-310-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2004-10-05 972-973-0XXX 0000–0999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DLFTWTARPT TX
2004-10-05 972-973-1XXX 1000–1999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DLFTWTARPT TX
2004-10-05 972-973-2XXX 2000–2999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DLFTWTARPT TX
2004-10-05 972-973-3XXX 3000–3999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DLFTWTARPT TX
2004-10-05 972-973-4XXX 4000–4999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DLFTWTARPT TX
2004-10-05 972-973-5XXX 5000–5999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DLFTWTARPT TX
2004-10-05 972-973-6XXX 6000–6999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DLFTWTARPT TX
2004-10-05 972-973-7XXX 7000–7999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DLFTWTARPT TX
2004-10-05 972-973-8XXX 8000–8999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DLFTWTARPT TX
2004-10-05 972-973-9XXX 9000–9999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DLFTWTARPT 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.