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
2010-04-01 972-360-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CARROLLTON TX
2010-03-23 972-363-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C MCKINNEY TX
2010-03-12 972-528-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C DALLAS TX
2010-03-10 972-676-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-03-10 972-676-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-03-10 972-676-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-03-10 972-676-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-03-10 972-676-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-03-10 972-676-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-03-10 972-676-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-03-10 972-676-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-03-10 972-676-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-03-08 972-332-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C ALLEN TX
2010-03-04 972-913-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-03-04 972-918-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C DALLAS TX
2010-03-04 972-918-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C DALLAS TX
2010-03-04 972-918-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C DALLAS TX
2010-03-02 972-277-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-03-02 972-893-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J IRVING TX
2010-02-19 972-966-7XXX 7000–7999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2010-02-18 972-803-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C DALLAS TX
2010-02-18 972-803-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C DALLAS TX
2010-02-11 972-360-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CARROLLTON TX
2010-02-11 972-914-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F NEVADA TX
2010-02-10 972-891-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F IRVING TX
2010-02-08 972-275-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-02-08 972-275-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-02-08 972-454-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-02-08 972-454-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-02-06 972-894-3XXX 3000–3999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2010-02-05 972-246-7XXX 7000–7999Assigned METROPCS, INC. 5562 DALLAS TX
2010-02-05 972-246-9XXX 9000–9999Assigned METROPCS, INC. 5562 DALLAS TX
2010-02-05 972-341-7XXX 7000–7999Assigned METROPCS, INC. 5562 DALLAS TX
2010-02-05 972-481-0XXX 0000–0999Assigned METROPCS, INC. 5562 DALLAS TX
2010-02-05 972-481-4XXX 4000–4999Assigned METROPCS, INC. 5562 DALLAS TX
2010-02-04 972-861-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-02-04 972-861-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-02-04 972-861-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-02-04 972-861-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-02-04 972-861-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-01-28 972-646-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARDWELL TX
2010-01-27 972-325-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SEAGOVILLE TX
2010-01-26 972-987-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F FRISCO TX
2010-01-22 972-630-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C DALLAS TX
2010-01-22 972-630-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C DALLAS TX
2010-01-18 972-351-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAXAHACHIE TX
2010-01-13 972-357-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORNEY TX
2010-01-12 972-426-1XXX 1000–1999Assigned FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 DLFTWTARPT TX
2009-12-21 972-861-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C DALLAS TX
2009-12-15 972-863-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C DALLAS 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.