Prefix Information
The prefix 340 is part of area code 918 serving Tulsa, Oklahoma.
This exchange contains 10,000 possible phone numbers (918-340-0000 through 918-340-9999).
Phone numbers with prefix 340 in area code 918. Location: Tulsa, Oklahoma.
The prefix 340 is part of area code 918 serving Tulsa, Oklahoma.
This exchange contains 10,000 possible phone numbers (918-340-0000 through 918-340-9999).