Prefix overview
Phone numbers in prefix 331-242
This page covers the 331-242 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
331-242
RATE CENTER
LOMBARD
CARRIER
T-MOBILE USA, INC.
IL
Prefix range
The prefix 331-242 includes numbers from 3312420000 to 3312429999.
This range is associated with the LOMBARD rate center and was originally assigned to T-MOBILE USA, INC..
Numbers in this prefix
20 numbers