Prefix Information
The prefix 400 is part of area code 404 serving Atlanta, Georgia.
This exchange contains 10,000 possible phone numbers (404-400-0000 through 404-400-9999).
Phone numbers with prefix 400 in area code 404. Location: Atlanta, Georgia.
The prefix 400 is part of area code 404 serving Atlanta, Georgia.
This exchange contains 10,000 possible phone numbers (404-400-0000 through 404-400-9999).