Prefix Information
The prefix 640 is part of area code 509 serving Spokane, Washington.
This exchange contains 10,000 possible phone numbers (509-640-0000 through 509-640-9999).
Phone numbers with prefix 640 in area code 509. Location: Spokane, Washington.
The prefix 640 is part of area code 509 serving Spokane, Washington.
This exchange contains 10,000 possible phone numbers (509-640-0000 through 509-640-9999).