NPA-NXX - 415-879

This is the 415-879 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. 415
3. 415-879

The 415-879 subcode mainly covers Mill Valley in Marin 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 Metropcs. 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 252409 comments across our systems for the 415-879 subcode.