Prefix Information
The prefix 631 is part of area code 539 serving Tulsa, Oklahoma.
This exchange contains 10,000 possible phone numbers (539-631-0000 through 539-631-9999).
Phone numbers with prefix 631 in area code 539. Location: Tulsa, Oklahoma.
The prefix 631 is part of area code 539 serving Tulsa, Oklahoma.
This exchange contains 10,000 possible phone numbers (539-631-0000 through 539-631-9999).