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 |
|---|---|---|---|---|---|---|---|
| 2015-06-22 | 737-300-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2015-06-22 | 737-300-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2015-06-22 | 737-600-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2015-06-22 | 737-600-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2015-06-18 | 737-600-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | AUSTIN | TX |
| 2015-06-18 | 737-600-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | AUSTIN | TX |
| 2015-06-18 | 737-600-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | AUSTIN | TX |
| 2015-06-18 | 737-600-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | AUSTIN | TX |
| 2015-06-08 | 737-808-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | GEORGETOWN | TX |
| 2015-06-08 | 737-808-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | GEORGETOWN | TX |
| 2015-06-08 | 737-808-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | GEORGETOWN | TX |
| 2015-06-08 | 737-808-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | GEORGETOWN | TX |
| 2015-06-08 | 737-808-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | GEORGETOWN | TX |
| 2015-05-28 | 737-600-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2015-05-14 | 737-300-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2015-05-08 | 737-300-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AUSTIN | TX |
| 2015-05-08 | 737-300-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AUSTIN | TX |
| 2015-05-08 | 737-300-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AUSTIN | TX |
| 2015-05-07 | 737-973-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | BRIGGS | TX |
| 2015-05-06 | 737-529-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | AUSTIN | TX |
| 2015-05-06 | 737-702-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | GRANGER | TX |
| 2015-05-06 | 737-800-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | AUSTIN | TX |
| 2015-05-04 | 737-201-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | TAYLOR | TX |
| 2015-04-27 | 737-529-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2015-04-27 | 737-529-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2015-04-27 | 737-529-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2015-04-27 | 737-529-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2015-04-27 | 737-529-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2015-04-27 | 737-529-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2015-04-27 | 737-529-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AUSTIN | TX |
| 2015-04-16 | 737-600-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2015-04-16 | 737-600-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2015-04-13 | 737-222-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2015-04-13 | 737-346-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TX | 004F | AUSTIN | TX |
| 2015-04-02 | 737-222-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AUSTIN | TX |
| 2015-04-02 | 737-222-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AUSTIN | TX |
| 2015-03-26 | 737-300-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2015-03-26 | 737-300-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2015-03-26 | 737-300-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2015-03-26 | 737-300-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2015-02-25 | 737-800-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | AUSTIN | TX |
| 2015-02-25 | 737-800-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | AUSTIN | TX |
| 2015-02-25 | 737-800-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | AUSTIN | TX |
| 2015-02-25 | 737-800-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | AUSTIN | TX |
| 2015-02-25 | 737-800-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | AUSTIN | TX |
| 2015-02-25 | 737-800-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | AUSTIN | TX |
| 2015-02-03 | 737-529-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2015-02-03 | 737-529-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2015-01-29 | 737-800-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | TX |
| 2015-01-29 | 737-800-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | AUSTIN | 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.