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
2010-12-16 972-372-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2010-12-16 972-675-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2010-12-13 972-435-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MAYPEARL TX
2010-12-01 972-256-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F IRVING TX
2010-12-01 972-853-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F NEVADA TX
2010-12-01 972-861-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-12-01 972-863-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-11-30 972-251-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2010-11-30 972-251-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2010-11-30 972-261-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2010-11-30 972-261-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2010-11-30 972-261-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 IRVING TX
2010-11-29 972-357-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FORNEY TX
2010-11-29 972-734-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PRINCETON TX
2010-11-29 972-782-0XXX 0000–0999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FARMERSVL TX
2010-11-20 972-372-6XXX 6000–6999Assigned SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 PLANO TX
2010-11-17 972-865-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2010-11-17 972-865-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2010-11-17 972-865-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2010-11-09 972-773-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-11-09 972-773-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-11-05 972-472-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CRANDALL TX
2010-11-05 972-474-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C COMBINE TX
2010-11-05 972-734-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C PRINCETON TX
2010-11-05 972-750-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TERRELL TX
2010-11-05 972-750-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TERRELL TX
2010-11-05 972-784-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C FARMERSVL TX
2010-11-05 972-876-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C ENNIS TX
2010-11-05 972-893-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 IRVING TX
2010-11-01 972-763-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-10-27 972-295-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2010-10-27 972-318-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LEWISVILLE TX
2010-10-27 972-807-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-10-27 972-808-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-10-27 972-850-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-10-27 972-850-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-10-27 972-855-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-10-27 972-908-4XXX 4000–4999Assigned SOUTHWESTERN BELL 9533 ALLEN TX
2010-10-26 972-474-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C COMBINE TX
2010-10-22 972-244-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PLANO TX
2010-10-22 972-372-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PLANO TX
2010-10-22 972-807-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-10-22 972-807-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2010-10-20 972-699-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-10-20 972-702-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-10-20 972-708-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-10-20 972-708-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-10-20 972-715-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2010-10-20 972-725-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C DALLAS TX
2010-10-20 972-729-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C 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.