Prefix Information
The prefix 312 is part of area code 770 serving Marietta, Georgia.
This exchange contains 10,000 possible phone numbers (770-312-0000 through 770-312-9999).
Phone numbers with prefix 312 in area code 770. Location: Marietta, Georgia.
The prefix 312 is part of area code 770 serving Marietta, Georgia.
This exchange contains 10,000 possible phone numbers (770-312-0000 through 770-312-9999).