Prefix Information

The prefix 991 is part of area code 415 serving San Francisco, California.

This exchange contains 10,000 possible phone numbers (415-991-0000 through 415-991-9999).

Browse Numbers in This Prefix

415-991-0000-0999 415-991-1000-1999 415-991-2000-2999 415-991-3000-3999 415-991-4000-4999 415-991-5000-5999 415-991-6000-6999 415-991-7000-7999 415-991-8000-8999 415-991-9000-9999

Sample Numbers

(415) 991-0000 (415) 991-1234 (415) 991-2000 (415) 991-3333 (415) 991-4444 (415) 991-5555 (415) 991-6000 (415) 991-7777 (415) 991-8888 (415) 991-9999