Prefix Information

The prefix 004 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-004-0000 through 312-004-9999).

Browse Numbers in This Prefix

312-004-0000-0999 312-004-1000-1999 312-004-2000-2999 312-004-3000-3999 312-004-4000-4999 312-004-5000-5999 312-004-6000-6999 312-004-7000-7999 312-004-8000-8999 312-004-9000-9999

Sample Numbers

(312) 004-0000 (312) 004-1234 (312) 004-2000 (312) 004-3333 (312) 004-4444 (312) 004-5555 (312) 004-6000 (312) 004-7777 (312) 004-8888 (312) 004-9999