Prefix Information
The prefix 604 is part of area code 628 serving San Francisco, California.
This exchange contains 10,000 possible phone numbers (628-604-0000 through 628-604-9999).
Phone numbers with prefix 604 in area code 628. Location: San Francisco, California.
The prefix 604 is part of area code 628 serving San Francisco, California.
This exchange contains 10,000 possible phone numbers (628-604-0000 through 628-604-9999).