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 |
|---|---|---|---|---|---|---|
| 2020-02-27 | 409-254 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | WOODVILLE | TX |
| 2005-02-10 | 409-232 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | CHINA | TX |
| 2005-02-10 | 409-349 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DEWEYVILLE | TX |
| 2005-02-10 | 409-445 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SOUR LAKE | TX |
| 2005-02-10 | 409-858 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | WILDWOOD | TX |
| 2004-06-04 | 409-209 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | KOUNTZE | TX |
| 2004-04-29 | 409-210 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | FANNETT | TX |
| 2004-04-29 | 409-213 | 0XXX1XXX3XXX5XXX7XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SABINEPASS | TX |
| 2002-07-16 | 409-527 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | NDLDPTNCHS | TX |
| 2002-06-13 | 409-291 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BEAUMONT | TX |
| 2002-06-13 | 409-292 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | LA BELLE | TX |
| 2002-06-13 | 409-293 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | PORTARTHUR | TX |
| 2002-03-28 | 409-877 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | GALVESTON | TX |
| 2002-02-21 | 409-229 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | TXSCYMARQU | TX |
| 2001-06-14 | 409-419 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | TXSCYMARQU | TX |
| — | 409-233 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | MAURICEVL | TX |
| — | 409-234 | 0–9 XXXwhole prefix which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BEAUMONT | TX |
| — | 409-241 | 0–9 XXXall 10 · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BEAUMONT | TX |
| — | 409-242 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BEAUMONT | TX |
| — | 409-373 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SILSBEE | TX |
| — | 409-515 | 3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | GALVESTON | TX |
| — | 409-571 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | BUNA | 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.