Prefix Information

The prefix 400 is part of area code 520 serving Tucson, Arizona.

This exchange contains 10,000 possible phone numbers (520-400-0000 through 520-400-9999).

Browse Numbers in This Prefix

520-400-0000-0999 520-400-1000-1999 520-400-2000-2999 520-400-3000-3999 520-400-4000-4999 520-400-5000-5999 520-400-6000-6999 520-400-7000-7999 520-400-8000-8999 520-400-9000-9999

Sample Numbers

(520) 400-0000 (520) 400-1234 (520) 400-2000 (520) 400-3333 (520) 400-4444 (520) 400-5555 (520) 400-6000 (520) 400-7777 (520) 400-8888 (520) 400-9999