NumberResearchRecent thousands-block assignments
1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 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
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-10-12 | 972-372-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLANO | TX |
| 2007-10-12 | 972-372-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLANO | TX |
| 2007-10-12 | 972-403-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLANO | TX |
| 2007-10-10 | 972-439-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | MCKINNEY | TX |
| 2007-10-04 | 972-244-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLANO | TX |
| 2007-10-03 | 972-388-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | DALLAS | TX |
| 2007-10-03 | 972-887-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | IRVING | TX |
| 2007-09-24 | 972-325-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SEAGOVILLE | TX |
| 2007-09-24 | 972-893-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | IRVING | TX |
| 2007-09-18 | 972-295-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLANO | TX |
| 2007-09-18 | 972-403-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLANO | TX |
| 2007-09-12 | 972-535-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | PLANO | TX |
| 2007-09-12 | 972-755-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DALLAS | TX |
| 2007-09-10 | 972-468-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLANO | TX |
| 2007-09-10 | 972-767-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLANO | TX |
| 2007-09-05 | 972-815-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | IRVING | TX |
| 2007-08-28 | 972-591-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DALLAS | TX |
| 2007-08-28 | 972-591-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DALLAS | TX |
| 2007-08-28 | 972-591-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DALLAS | TX |
| 2007-08-28 | 972-591-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DALLAS | TX |
| 2007-07-19 | 972-372-2XXX | 2000–2999 | Assigned | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | PLANO | TX |
| 2007-07-16 | 972-791-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | IRVING | TX |
| 2007-07-11 | 972-400-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX |
| 2007-07-11 | 972-400-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX |
| 2007-07-11 | 972-400-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX |
| 2007-07-09 | 972-217-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | DE SOTO | TX |
| 2007-07-09 | 972-217-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | DE SOTO | TX |
| 2007-07-09 | 972-217-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DE SOTO | TX |
| 2007-07-09 | 972-510-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2007-07-09 | 972-510-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2007-07-09 | 972-510-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2007-07-09 | 972-793-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2007-07-09 | 972-793-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2007-07-09 | 972-793-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2007-07-05 | 972-284-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | DALLAS | TX |
| 2007-07-05 | 972-284-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | DALLAS | TX |
| 2007-07-02 | 972-600-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | IRVING | TX |
| 2007-07-02 | 972-908-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | ALLEN | TX |
| 2007-07-02 | 972-908-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | ALLEN | TX |
| 2007-06-22 | 972-201-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | DALLAS | TX |
| 2007-06-22 | 972-201-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | DALLAS | TX |
| 2007-06-22 | 972-201-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | DALLAS | TX |
| 2007-06-22 | 972-201-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | DALLAS | TX |
| 2007-06-22 | 972-201-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | DALLAS | TX |
| 2007-06-22 | 972-480-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | DALLAS | TX |
| 2007-06-22 | 972-480-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | DALLAS | TX |
| 2007-06-22 | 972-480-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | DALLAS | TX |
| 2007-06-22 | 972-480-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | DALLAS | TX |
| 2007-06-21 | 972-325-3XXX | 3000–3999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SEAGOVILLE | TX |
| 2007-06-14 | 972-637-1XXX | 1000–1999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CEDAR HILL | 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.