NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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 |
|---|---|---|---|---|---|---|
| — | 903-552 | 3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BLOOMNGGRV | TX |
| — | 903-627 | 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | VANALSTYNE | TX |
| — | 903-642 | 1XXX2XXX4XXX6XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | OAKWOOD | TX |
| — | 903-653 | 0XXX1XXX2XXX4XXX5XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | LONGVIEW | TX |
| — | 903-686 | 1XXX2XXX3XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | LONGVIEW | TX |
| — | 903-696 | not yet reported which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | GUNTER | TX |
| — | 903-698 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BAGWELL | TX |
| — | 903-712 | 2XXX5XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | VANALSTYNE | TX |
| — | 903-741 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BOGATA | TX |
| — | 903-751 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | CADDOMILLS | TX |
| — | 903-781 | 1XXX2XXX3XXX4XXX6XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | ALBA | TX |
| — | 903-827 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | COMO | TX |
| — | 903-929 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | WINDOM | TX |
| — | 903-964 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | POINT | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.