NumberResearchRecent thousands-block assignments
23 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 737
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 |
|---|---|---|---|---|---|---|---|
| 2016-09-14 | 737-757-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LEANDER | TX |
| 2016-09-08 | 737-618-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | LAMPASAS | TX |
| 2016-09-07 | 737-200-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | ELGIN | TX |
| 2016-09-07 | 737-881-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BASTROP | TX |
| 2016-08-17 | 737-207-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | AUSTIN | TX |
| 2016-08-17 | 737-216-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | TAYLOR | TX |
| 2016-08-17 | 737-747-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BURNET | TX |
| 2016-08-17 | 737-747-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BURNET | TX |
| 2016-08-10 | 737-212-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AUSTIN | TX |
| 2016-08-10 | 737-443-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AUSTIN | TX |
| 2016-08-10 | 737-757-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LEANDER | TX |
| 2016-08-03 | 737-200-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | ELGIN | TX |
| 2016-07-28 | 737-205-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AUSTIN | TX |
| 2016-07-28 | 737-205-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AUSTIN | TX |
| 2016-07-19 | 737-400-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2016-07-19 | 737-400-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2016-07-19 | 737-400-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2016-07-19 | 737-443-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2016-07-19 | 737-443-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2016-07-08 | 737-205-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2016-07-08 | 737-205-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2016-07-08 | 737-205-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2016-07-08 | 737-205-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2016-07-08 | 737-205-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2016-07-08 | 737-400-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | AUSTIN | TX |
| 2016-07-08 | 737-400-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | AUSTIN | TX |
| 2016-07-08 | 737-400-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | AUSTIN | TX |
| 2016-07-08 | 737-701-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | AUSTIN | TX |
| 2016-07-08 | 737-708-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | AUSTIN | TX |
| 2016-07-01 | 737-216-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | TAYLOR | TX |
| 2016-06-30 | 737-302-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | SMITHVILLE | TX |
| 2016-06-29 | 737-443-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2016-06-29 | 737-443-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2016-06-27 | 737-302-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | SMITHVILLE | TX |
| 2016-06-24 | 737-443-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | AUSTIN | TX |
| 2016-06-24 | 737-443-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | AUSTIN | TX |
| 2016-06-24 | 737-443-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | AUSTIN | TX |
| 2016-06-24 | 737-618-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LAMPASAS | TX |
| 2016-06-24 | 737-757-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | LEANDER | TX |
| 2016-06-21 | 737-708-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2016-06-21 | 737-708-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2016-06-20 | 737-708-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AUSTIN | TX |
| 2016-06-16 | 737-209-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | AUSTIN | TX |
| 2016-06-16 | 737-209-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | AUSTIN | TX |
| 2016-06-15 | 737-443-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | AUSTIN | TX |
| 2016-06-14 | 737-209-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | AUSTIN | TX |
| 2016-05-25 | 737-209-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | AUSTIN | TX |
| 2016-05-25 | 737-209-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | AUSTIN | TX |
| 2016-05-19 | 737-302-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SMITHVILLE | TX |
| 2016-05-19 | 737-747-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | BURNET | 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.