Prefix overview
Phone numbers in prefix 310-366
This page covers the 310-366 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
310-366
RATE CENTER
CMTN GRDN
CARRIER
PACIFIC BELL
CA
Prefix range
The prefix 310-366 includes numbers from 3103660000 to 3103669999.
This range is associated with the CMTN GRDN rate center and was originally assigned to PACIFIC BELL.
Numbers in this prefix
20 numbers