Prefix overview
Phone numbers in prefix 340-203
This page covers the 340-203 prefix in the United States. It shows where numbers come from, which carrier is linked to the range, and how this block is structured.
If you are looking for a specific number, you can continue to its dedicated phone page. Otherwise, this page helps you understand the broader number block behind it.
PREFIX
340-203
RATE CENTER
CHTAMSTTHS
CARRIER
T-MOBILE USA, INC.
VI
Prefix range
The prefix 340-203 includes numbers from 3402030000 to 3402039999.
This range is associated with the CHTAMSTTHS rate center and was originally assigned to T-MOBILE USA, INC..
Numbers in this prefix
20 numbers