NPA-NXX - 774-840

This is the 774-840 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. 774
3. 774-840

The 774-840 subcode mainly covers Chatham in Barnstable 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 Cellular (Dedicated) registered to At&t Mobility. 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 215888 comments across our systems for the 774-840 subcode.