NumberResearchRecent thousands-block assignments
36 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 346
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 |
|---|---|---|---|---|---|---|---|
| 2015-12-09 | 346-314-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SATSUMA | TX |
| 2015-12-09 | 346-314-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SATSUMA | TX |
| 2015-12-09 | 346-402-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CLEVELAND | TX |
| 2015-12-09 | 346-808-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | TOMBALL | TX |
| 2015-12-09 | 346-808-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | TOMBALL | TX |
| 2015-12-08 | 346-214-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-12-08 | 346-214-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-12-08 | 346-214-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-12-08 | 346-214-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-12-08 | 346-214-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-12-08 | 346-214-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-12-08 | 346-214-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-12-08 | 346-214-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-12-08 | 346-214-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-12-08 | 346-214-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-12-08 | 346-331-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| 2015-12-08 | 346-340-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-08 | 346-340-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-08 | 346-340-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-08 | 346-340-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-08 | 346-340-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-08 | 346-340-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-08 | 346-340-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-08 | 346-340-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-08 | 346-340-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-08 | 346-340-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-08 | 346-666-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | CYPRESS | TX |
| 2015-12-03 | 346-229-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-03 | 346-229-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-03 | 346-239-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | RICHMNRNBG | TX |
| 2015-12-02 | 346-215-2XXX | 2000–2999 | Assigned | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7074 | ALVIN | TX |
| 2015-12-02 | 346-312-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | HSTNSUBURB | TX |
| 2015-12-02 | 346-312-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | HSTNSUBURB | TX |
| 2015-11-30 | 346-331-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | SPRING | TX |
| 2015-11-25 | 346-251-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | BARKER | TX |
| 2015-11-25 | 346-256-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-25 | 346-256-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-25 | 346-256-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-25 | 346-256-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-25 | 346-256-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-25 | 346-256-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-25 | 346-256-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-25 | 346-256-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-25 | 346-256-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-25 | 346-320-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-25 | 346-331-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | SPRING | TX |
| 2015-11-25 | 346-331-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | SPRING | TX |
| 2015-11-24 | 346-317-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-317-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-317-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | 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.