Prefix Information

The prefix 103 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-103-0000 through 312-103-9999).

Browse Numbers in This Prefix

312-103-0000-0999 312-103-1000-1999 312-103-2000-2999 312-103-3000-3999 312-103-4000-4999 312-103-5000-5999 312-103-6000-6999 312-103-7000-7999 312-103-8000-8999 312-103-9000-9999

Sample Numbers

(312) 103-0000 (312) 103-1234 (312) 103-2000 (312) 103-3333 (312) 103-4444 (312) 103-5555 (312) 103-6000 (312) 103-7777 (312) 103-8888 (312) 103-9999