Prefix Information

The prefix 400 is part of area code 408 serving San Jose, California.

This exchange contains 10,000 possible phone numbers (408-400-0000 through 408-400-9999).

Browse Numbers in This Prefix

408-400-0000-0999 408-400-1000-1999 408-400-2000-2999 408-400-3000-3999 408-400-4000-4999 408-400-5000-5999 408-400-6000-6999 408-400-7000-7999 408-400-8000-8999 408-400-9000-9999

Sample Numbers

(408) 400-0000 (408) 400-1234 (408) 400-2000 (408) 400-3333 (408) 400-4444 (408) 400-5555 (408) 400-6000 (408) 400-7777 (408) 400-8888 (408) 400-9999