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 |
|---|---|---|---|---|---|---|---|
| 2009-12-15 | 972-863-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DALLAS | TX |
| 2009-12-14 | 972-309-3XXX | 3000–3999 | Assigned | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | PLANO | TX |
| 2009-12-07 | 972-212-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | PLANO | TX |
| 2009-11-23 | 972-212-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PLANO | TX |
| 2009-11-23 | 972-301-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | DALLAS | TX |
| 2009-11-23 | 972-301-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | DALLAS | TX |
| 2009-11-23 | 972-301-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | DALLAS | TX |
| 2009-11-18 | 972-674-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX |
| 2009-11-18 | 972-674-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX |
| 2009-11-18 | 972-674-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX |
| 2009-11-18 | 972-674-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX |
| 2009-11-16 | 972-695-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CARROLLTON | TX |
| 2009-11-03 | 972-292-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FRISCO | TX |
| 2009-11-03 | 972-863-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DALLAS | TX |
| 2009-11-02 | 972-330-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ENNIS | TX |
| 2009-11-02 | 972-330-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ENNIS | TX |
| 2009-10-28 | 972-876-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ENNIS | TX |
| 2009-10-23 | 972-515-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RED OAK | TX |
| 2009-10-21 | 972-510-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | IRVING | TX |
| 2009-10-21 | 972-514-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | IRVING | TX |
| 2009-10-21 | 972-514-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | IRVING | TX |
| 2009-10-21 | 972-827-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | IRVING | TX |
| 2009-10-21 | 972-827-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | IRVING | TX |
| 2009-10-21 | 972-836-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PLANO | TX |
| 2009-10-21 | 972-836-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PLANO | TX |
| 2009-10-21 | 972-836-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PLANO | TX |
| 2009-10-21 | 972-836-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PLANO | TX |
| 2009-10-21 | 972-926-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | PLANO | TX |
| 2009-10-08 | 972-996-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | DALLAS | TX |
| 2009-10-07 | 972-428-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | CARROLLTON | TX |
| 2009-10-01 | 972-695-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CARROLLTON | TX |
| 2009-09-30 | 972-850-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | DALLAS | TX |
| 2009-09-24 | 972-652-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | IRVING | TX |
| 2009-09-23 | 972-546-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | DALLAS | TX |
| 2009-09-23 | 972-559-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | DALLAS | TX |
| 2009-08-11 | 972-460-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | CEDAR HILL | TX |
| 2009-08-05 | 972-395-6XXX | 6000–6999 | Assigned | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | CARROLLTON | TX |
| 2009-08-05 | 972-695-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CARROLLTON | TX |
| 2009-07-15 | 972-695-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CARROLLTON | TX |
| 2009-07-13 | 972-781-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | PLANO | TX |
| 2009-07-06 | 972-532-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX |
| 2009-06-04 | 972-863-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DALLAS | TX |
| 2009-06-03 | 972-552-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7148 | FORNEY | TX |
| 2009-05-08 | 972-863-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | DALLAS | TX |
| 2009-05-08 | 972-863-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | DALLAS | TX |
| 2009-04-30 | 972-215-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | IRVING | TX |
| 2009-04-15 | 972-924-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | ANNA | TX |
| 2009-03-10 | 972-330-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | ENNIS | TX |
| 2009-02-10 | 972-290-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DALLAS | TX |
| 2009-02-10 | 972-513-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | IRVING | 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.