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
2011-07-28 972-810-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CARROLLTON TX
2011-07-28 972-843-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F NEVADA TX
2011-07-27 972-916-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 IRVING TX
2011-07-22 972-663-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C DALLAS TX
2011-07-22 972-707-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C DALLAS TX
2011-07-22 972-707-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C DALLAS TX
2011-07-21 972-375-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GRANDPRARI TX
2011-07-14 972-330-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ENNIS TX
2011-07-14 972-332-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ALLEN TX
2011-07-14 972-332-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ALLEN TX
2011-07-14 972-854-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2011-07-14 972-854-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2011-07-12 972-850-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J DALLAS TX
2011-07-11 972-656-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C DALLAS TX
2011-07-11 972-656-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C DALLAS TX
2011-06-29 972-621-1XXX 1000–1999Assigned METROPCS, INC. 5562 IRVING TX
2011-06-29 972-621-9XXX 9000–9999Assigned METROPCS, INC. 5562 IRVING TX
2011-06-27 972-232-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C DALLAS TX
2011-06-27 972-349-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C DALLAS TX
2011-06-24 972-629-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2011-06-24 972-773-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2011-06-24 972-975-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2011-06-24 972-975-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2011-06-24 972-975-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2011-06-24 972-975-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2011-06-17 972-479-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C DALLAS TX
2011-06-08 972-232-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2011-06-07 972-338-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C DALLAS TX
2011-06-07 972-752-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BLUE RIDGE TX
2011-05-31 972-210-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TERRELL TX
2011-05-31 972-564-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FORNEY TX
2011-05-31 972-763-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J DALLAS TX
2011-05-26 972-454-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2011-05-26 972-454-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DALLAS TX
2011-05-26 972-528-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2011-05-26 972-774-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2011-05-26 972-776-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2011-05-24 972-822-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 IRVING TX
2011-05-23 972-787-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K PROSPER TX
2011-05-23 972-843-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F NEVADA TX
2011-05-23 972-905-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PLANO TX
2011-05-23 972-905-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PLANO TX
2011-05-23 972-905-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K PLANO TX
2011-05-23 972-905-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PLANO TX
2011-05-23 972-905-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PLANO TX
2011-05-17 972-905-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PLANO TX
2011-05-13 972-213-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2011-05-13 972-213-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2011-05-13 972-213-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2011-05-13 972-213-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 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.