NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
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 |
|---|---|---|---|---|---|---|
| 2022-03-03 | 281-790 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| 2020-12-18 | 281-696 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2006-04-11 | 281-905 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2006-03-13 | 281-779 | 0–9 XXXall 10 · 2 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2006-01-05 | 281-736 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2002-10-18 | 281-642 | none assigned yet which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| 2001-06-20 | 281-683 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| — | 281-235 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| — | 281-236 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| — | 281-250 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| — | 281-541 | none assigned yet which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | SPRING | TX |
| — | 281-628 | 0–9 XXXall 10 · 6 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAYTOWN | TX |
| — | 281-650 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| — | 281-701 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| — | 281-704 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| — | 281-748 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| — | 281-818 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| — | 281-827 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| — | 281-831 | none assigned yet which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| — | 281-846 | 0–9 XXXall 10 · 6 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| — | 281-935 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
| — | 281-948 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| — | 281-965 | 0–9 XXXall 10 · 2 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HSTNSUBURB | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.