Prefix Information

The prefix 011 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-011-0000 through 312-011-9999).

Browse Numbers in This Prefix

312-011-0000-0999 312-011-1000-1999 312-011-2000-2999 312-011-3000-3999 312-011-4000-4999 312-011-5000-5999 312-011-6000-6999 312-011-7000-7999 312-011-8000-8999 312-011-9000-9999

Sample Numbers

(312) 011-0000 (312) 011-1234 (312) 011-2000 (312) 011-3333 (312) 011-4444 (312) 011-5555 (312) 011-6000 (312) 011-7777 (312) 011-8888 (312) 011-9999