Prefix Information

The prefix 557 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-557-0000 through 312-557-9999).

Browse Numbers in This Prefix

312-557-0000-0999 312-557-1000-1999 312-557-2000-2999 312-557-3000-3999 312-557-4000-4999 312-557-5000-5999 312-557-6000-6999 312-557-7000-7999 312-557-8000-8999 312-557-9000-9999

Sample Numbers

(312) 557-0000 (312) 557-1234 (312) 557-2000 (312) 557-3333 (312) 557-4444 (312) 557-5555 (312) 557-6000 (312) 557-7777 (312) 557-8888 (312) 557-9999