Prefix Information
The prefix 991 is part of area code 669 serving San Jose, California.
This exchange contains 10,000 possible phone numbers (669-991-0000 through 669-991-9999).
Phone numbers with prefix 991 in area code 669. Location: San Jose, California.
The prefix 991 is part of area code 669 serving San Jose, California.
This exchange contains 10,000 possible phone numbers (669-991-0000 through 669-991-9999).