NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2016-01-18 | 346-717 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-12-22 | 346-617 | 0–9 XXXall 10 · 5 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | DICKINSON | TX |
| 2015-12-10 | 346-814 | 0–9 XXXall 10 · 3 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| 2015-12-10 | 346-818 | 0–9 XXXall 10 · 4 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | CYPRESS | TX |
| 2015-11-25 | 346-256 | 0–9 XXXall 10 · 2 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-25 | 346-320 | 0–9 XXXall 10 · 6 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-317 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-24 | 346-775 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-11-13 | 346-239 | 0–9 XXXall 10 · 5 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | RICHMNRNBG | TX |
| 2015-11-05 | 346-276 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-10-23 | 346-402 | 0–9 XXXall 10 · 5 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | CLEVELAND | TX |
| 2015-08-27 | 346-813 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-08-20 | 346-303 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-07-14 | 346-812 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2015-06-10 | 346-754 | 0–9 XXXall 10 · 4 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2015-06-10 | 346-803 | 0–9 XXXall 10 · 4 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2015-05-27 | 346-401 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2015-03-02 | 346-218 | 0–9 XXXall 10 · 3 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | CYPRESS | TX |
| — | 346-212 | 0–9 XXXall 10 · 3 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| — | 346-383 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| — | 346-664 | 0–9 XXXall 10 · 2 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.