NPA-NXX - 413-504

This is the 413-504 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. 413
3. 413-504

The 413-504 subcode mainly covers Springfield in Hampden county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Massachusetts state. Many of the numbers in this subcode are Regular Landline registered to At&t. We hear they employ a large number of people in the Massachusetts office.
Recently there have been an increase in reported calls, we've had over 463490 comments across our systems for the 413-504 subcode.