Prefix Information

The prefix 440 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-440-0000 through 312-440-9999).

Browse Numbers in This Prefix

312-440-0000-0999 312-440-1000-1999 312-440-2000-2999 312-440-3000-3999 312-440-4000-4999 312-440-5000-5999 312-440-6000-6999 312-440-7000-7999 312-440-8000-8999 312-440-9000-9999

Sample Numbers

(312) 440-0000 (312) 440-1234 (312) 440-2000 (312) 440-3333 (312) 440-4444 (312) 440-5555 (312) 440-6000 (312) 440-7777 (312) 440-8888 (312) 440-9999