NPA-NXX - 408-429

This is the 408-429 subcode (NPA-NXX) prefix page. Follow a prefix to find the number you are looking for. We divide our pages up to make them more user friendly to navigate!

1. Area Codes
2. 408
3. 408-429

The 408-429 subcode mainly covers Campbell in Santa Clara county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of California state. Many of the numbers in this subcode are Cellular (Dedicated) registered to T-mobile. We hear they employ a large number of people in the California office.
Recently there have been an increase in reported calls, we've had over 1781642 comments across our systems for the 408-429 subcode.