Prefix Information

The prefix 540 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-540-0000 through 312-540-9999).

Browse Numbers in This Prefix

312-540-0000-0999 312-540-1000-1999 312-540-2000-2999 312-540-3000-3999 312-540-4000-4999 312-540-5000-5999 312-540-6000-6999 312-540-7000-7999 312-540-8000-8999 312-540-9000-9999

Sample Numbers

(312) 540-0000 (312) 540-1234 (312) 540-2000 (312) 540-3333 (312) 540-4444 (312) 540-5555 (312) 540-6000 (312) 540-7777 (312) 540-8888 (312) 540-9999