Prefix Information
The prefix 331 is part of area code 540 serving Roanoke, Virginia.
This exchange contains 10,000 possible phone numbers (540-331-0000 through 540-331-9999).
Phone numbers with prefix 331 in area code 540. Location: Roanoke, Virginia.
The prefix 331 is part of area code 540 serving Roanoke, Virginia.
This exchange contains 10,000 possible phone numbers (540-331-0000 through 540-331-9999).