NPA-NXX - 425-640

This is the 425-640 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. 425
3. 425-640

The 425-640 subcode mainly covers Halls Lake in Snohomish county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Washington state. Many of the numbers in this subcode are Regular Landline registered to Frontier. We hear they employ a large number of people in the Washington office.
Recently there have been an increase in reported calls, we've had over 713335 comments across our systems for the 425-640 subcode.