Prefix Information
The prefix 640 is part of area code 559 serving Fresno, California.
This exchange contains 10,000 possible phone numbers (559-640-0000 through 559-640-9999).
Phone numbers with prefix 640 in area code 559. Location: Fresno, California.
The prefix 640 is part of area code 559 serving Fresno, California.
This exchange contains 10,000 possible phone numbers (559-640-0000 through 559-640-9999).