Prefix Information
The prefix 312 is part of area code 317 serving Indianapolis, Indiana.
This exchange contains 10,000 possible phone numbers (317-312-0000 through 317-312-9999).
Phone numbers with prefix 312 in area code 317. Location: Indianapolis, Indiana.
The prefix 312 is part of area code 317 serving Indianapolis, Indiana.
This exchange contains 10,000 possible phone numbers (317-312-0000 through 317-312-9999).