NPA-NXX - 678-421

This is the 678-421 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. 678
3. 678-421

The 678-421 subcode mainly covers Atlanta Northeast in Gwinnett county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Georgia state. Many of the numbers in this subcode are Regular Landline registered to At&t Southeast. We hear they employ a large number of people in the Georgia office.
Recently there have been an increase in reported calls, we've had over 805321 comments across our systems for the 678-421 subcode.