Prefix overview
Phone numbers in prefix 310-374
This page covers the 310-374 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
310-374
RATE CENTER
REDONDO
CARRIER
FRONTIER CALIFORNIA INC.
CA
Prefix range
The prefix 310-374 includes numbers from 3103740000 to 3103749999.
This range is associated with the REDONDO rate center and was originally assigned to FRONTIER CALIFORNIA INC..
Numbers in this prefix
20 numbers