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 |
|---|---|---|---|---|---|---|---|
| 2014-03-25 | 972-521-2XXX | 2000–2999 | Assigned | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 0701 | ALLEN | TX |
| 2014-03-18 | 972-895-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | BRISTOL | TX |
| 2014-03-18 | 972-895-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | BRISTOL | TX |
| 2014-03-12 | 972-666-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BRISTOL | TX |
| 2014-03-06 | 972-362-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | DALLAS | TX |
| 2014-03-05 | 972-210-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | TERRELL | TX |
| 2014-02-25 | 972-684-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | DALLAS | TX |
| 2014-02-25 | 972-684-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | DALLAS | TX |
| 2014-02-25 | 972-684-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | DALLAS | TX |
| 2014-02-25 | 972-684-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | DALLAS | TX |
| 2014-02-25 | 972-684-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | DALLAS | TX |
| 2014-02-24 | 972-460-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | CEDAR HILL | TX |
| 2014-02-12 | 972-685-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DALLAS | TX |
| 2014-02-12 | 972-685-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DALLAS | TX |
| 2014-02-12 | 972-685-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DALLAS | TX |
| 2014-02-12 | 972-685-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DALLAS | TX |
| 2014-02-12 | 972-685-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DALLAS | TX |
| 2014-02-12 | 972-685-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DALLAS | TX |
| 2014-02-12 | 972-685-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DALLAS | TX |
| 2014-02-12 | 972-685-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DALLAS | TX |
| 2013-12-31 | 972-595-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX |
| 2013-12-31 | 972-595-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | GRANDPRARI | TX |
| 2013-12-19 | 972-734-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | PRINCETON | TX |
| 2013-11-26 | 972-908-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ALLEN | TX |
| 2013-11-14 | 972-853-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | NEVADA | TX |
| 2013-11-12 | 972-457-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | IRVING | TX |
| 2013-11-12 | 972-521-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | ALLEN | TX |
| 2013-11-12 | 972-521-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | ALLEN | TX |
| 2013-11-12 | 972-846-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | BRISTOL | TX |
| 2013-11-12 | 972-846-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | BRISTOL | TX |
| 2013-11-12 | 972-853-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | NEVADA | TX |
| 2013-11-12 | 972-853-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | NEVADA | TX |
| 2013-11-11 | 972-427-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | CRANDALL | TX |
| 2013-11-11 | 972-427-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | CRANDALL | TX |
| 2013-11-11 | 972-449-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | PALMER | TX |
| 2013-11-11 | 972-449-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | PALMER | TX |
| 2013-11-11 | 972-694-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | JOSEPHINE | TX |
| 2013-11-08 | 972-637-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | CEDAR HILL | TX |
| 2013-11-08 | 972-637-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | CEDAR HILL | TX |
| 2013-11-08 | 972-736-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | PRINCETON | TX |
| 2013-11-08 | 972-736-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | PRINCETON | TX |
| 2013-11-08 | 972-833-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | FERRIS | TX |
| 2013-11-08 | 972-833-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | FERRIS | TX |
| 2013-11-05 | 972-810-8XXX | 8000–8999 | Assigned | TWILIO INTERNATIONAL, INC. | 506J | CARROLLTON | TX |
| 2013-11-05 | 972-810-9XXX | 9000–9999 | Assigned | TWILIO INTERNATIONAL, INC. | 506J | CARROLLTON | TX |
| 2013-10-31 | 972-637-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CEDAR HILL | TX |
| 2013-10-17 | 972-457-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | IRVING | TX |
| 2013-10-11 | 972-810-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | CARROLLTON | TX |
| 2013-10-03 | 972-833-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | FERRIS | TX |
| 2013-09-25 | 972-515-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | RED OAK | 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.