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
2011-05-12 972-201-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2011-05-12 972-218-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2011-05-12 972-232-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2011-05-11 972-807-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K DALLAS TX
2011-05-11 972-807-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K DALLAS TX
2011-05-11 972-807-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K DALLAS TX
2011-05-11 972-925-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K DALLAS TX
2011-05-11 972-925-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K DALLAS TX
2011-05-05 972-905-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2011-05-05 972-905-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2011-04-26 972-201-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2011-04-26 972-996-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2011-04-25 972-521-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ALLEN TX
2011-04-25 972-521-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ALLEN TX
2011-04-25 972-532-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-532-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-532-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-532-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-532-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-581-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-587-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-587-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-587-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-590-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-590-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-616-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-619-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-619-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-25 972-619-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-04-20 972-773-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C DALLAS TX
2011-04-19 972-399-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F IRVING TX
2011-04-19 972-413-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F IRVING TX
2011-04-19 972-445-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F IRVING TX
2011-04-19 972-445-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F IRVING TX
2011-04-19 972-465-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F IRVING TX
2011-04-14 972-619-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C DALLAS TX
2011-04-14 972-619-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C DALLAS TX
2011-04-14 972-975-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C GRANDPRARI TX
2011-04-14 972-975-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C GRANDPRARI TX
2011-04-13 972-750-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TERRELL TX
2011-04-13 972-905-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 PLANO TX
2011-04-12 972-528-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C DALLAS TX
2011-04-11 972-947-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DLFTWTARPT TX
2011-04-04 972-793-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 IRVING TX
2011-04-04 972-893-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 IRVING TX
2011-03-30 972-357-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FORNEY TX
2011-03-30 972-357-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 FORNEY TX
2011-03-30 972-559-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-03-30 972-863-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-03-30 972-863-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F 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.