Prefix Information

The prefix 003 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-003-0000 through 312-003-9999).

Browse Numbers in This Prefix

312-003-0000-0999 312-003-1000-1999 312-003-2000-2999 312-003-3000-3999 312-003-4000-4999 312-003-5000-5999 312-003-6000-6999 312-003-7000-7999 312-003-8000-8999 312-003-9000-9999

Sample Numbers

(312) 003-0000 (312) 003-1234 (312) 003-2000 (312) 003-3333 (312) 003-4444 (312) 003-5555 (312) 003-6000 (312) 003-7777 (312) 003-8888 (312) 003-9999