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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-11-24 | 346-317-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-317-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-317-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-317-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-317-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-317-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-317-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-775-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-775-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-775-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-775-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-775-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-775-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-775-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-775-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-775-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-775-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-20 | 346-308-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-20 | 346-308-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-20 | 346-308-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-20 | 346-308-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-13 | 346-239-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2015-11-13 | 346-239-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2015-11-12 | 346-308-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2015-11-12 | 346-308-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2015-11-12 | 346-315-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DEER PARK | TX |
| 2015-11-12 | 346-315-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DEER PARK | TX |
| 2015-11-12 | 346-315-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DEER PARK | TX |
| 2015-11-11 | 346-251-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | BARKER | TX |
| 2015-11-11 | 346-251-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | BARKER | TX |
| 2015-11-11 | 346-251-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | BARKER | TX |
| 2015-11-10 | 346-216-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2015-11-10 | 346-216-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2015-11-10 | 346-216-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2015-11-10 | 346-216-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2015-11-10 | 346-216-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2015-11-10 | 346-216-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| 2015-11-10 | 346-702-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2015-11-10 | 346-702-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2015-11-09 | 346-208-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | DICKINSON | TX |
| 2015-11-09 | 346-208-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | DICKINSON | TX |
| 2015-11-09 | 346-208-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | DICKINSON | TX |
| 2015-11-09 | 346-208-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | DICKINSON | TX |
| 2015-11-06 | 346-276-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-11-06 | 346-276-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-11-06 | 346-276-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-11-06 | 346-276-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-11-06 | 346-276-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-11-06 | 346-276-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-11-06 | 346-276-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | 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.