Prefix Information

The prefix 644 is part of area code 415 serving San Francisco, California.

This exchange contains 10,000 possible phone numbers (415-644-0000 through 415-644-9999).

Browse Numbers in This Prefix

415-644-0000-0999 415-644-1000-1999 415-644-2000-2999 415-644-3000-3999 415-644-4000-4999 415-644-5000-5999 415-644-6000-6999 415-644-7000-7999 415-644-8000-8999 415-644-9000-9999

Sample Numbers

(415) 644-0000 (415) 644-1234 (415) 644-2000 (415) 644-3333 (415) 644-4444 (415) 644-5555 (415) 644-6000 (415) 644-7777 (415) 644-8888 (415) 644-9999