Prefix overview
Phone numbers in prefix 408-421
This page covers the 408-421 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
408-421
RATE CENTER
SNJS NORTH
CARRIER
NEW CINGULAR WIRELESS PCS, LLC
CA
Prefix range
The prefix 408-421 includes numbers from 4084210000 to 4084219999.
This range is associated with the SNJS NORTH rate center and was originally assigned to NEW CINGULAR WIRELESS PCS, LLC.
Numbers in this prefix
20 numbers