Prefix Information

The prefix 505 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-505-0000 through 312-505-9999).

Browse Numbers in This Prefix

312-505-0000-0999 312-505-1000-1999 312-505-2000-2999 312-505-3000-3999 312-505-4000-4999 312-505-5000-5999 312-505-6000-6999 312-505-7000-7999 312-505-8000-8999 312-505-9000-9999

Sample Numbers

(312) 505-0000 (312) 505-1234 (312) 505-2000 (312) 505-3333 (312) 505-4444 (312) 505-5555 (312) 505-6000 (312) 505-7777 (312) 505-8888 (312) 505-9999