Prefix overview
Phone numbers in prefix 310-345
This page covers the 310-345 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
310-345
RATE CENTER
CMTN GRDN
CARRIER
T-MOBILE USA, INC.
CA
Prefix range
The prefix 310-345 includes numbers from 3103450000 to 3103459999.
This range is associated with the CMTN GRDN rate center and was originally assigned to T-MOBILE USA, INC..
Numbers in this prefix
20 numbers