Prefix overview
Phone numbers in prefix 408-300
This page covers the 408-300 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
408-300
RATE CENTER
SNJS SOUTH
CARRIER
COMCAST IP PHONE, LLC
CA
Prefix range
The prefix 408-300 includes numbers from 4083000000 to 4083009999.
This range is associated with the SNJS SOUTH rate center and was originally assigned to COMCAST IP PHONE, LLC.
Numbers in this prefix
20 numbers