Prefix Information
The prefix 840 is part of area code 540 serving Roanoke, Virginia.
This exchange contains 10,000 possible phone numbers (540-840-0000 through 540-840-9999).
Phone numbers with prefix 840 in area code 540. Location: Roanoke, Virginia.
The prefix 840 is part of area code 540 serving Roanoke, Virginia.
This exchange contains 10,000 possible phone numbers (540-840-0000 through 540-840-9999).