Prefix overview
Phone numbers in prefix 331-703
This page covers the 331-703 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
331-703
RATE CENTER
W CHICAGO
CARRIER
T-MOBILE USA, INC.
IL
Prefix range
The prefix 331-703 includes numbers from 3317030000 to 3317039999.
This range is associated with the W CHICAGO rate center and was originally assigned to T-MOBILE USA, INC..
Numbers in this prefix
20 numbers