Prefix Information
The prefix 311 is part of area code 918 serving Tulsa, Oklahoma.
This exchange contains 10,000 possible phone numbers (918-311-0000 through 918-311-9999).
Phone numbers with prefix 311 in area code 918. Location: Tulsa, Oklahoma.
The prefix 311 is part of area code 918 serving Tulsa, Oklahoma.
This exchange contains 10,000 possible phone numbers (918-311-0000 through 918-311-9999).