Prefix Information

The prefix 812 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-812-0000 through 312-812-9999).

Browse Numbers in This Prefix

312-812-0000-0999 312-812-1000-1999 312-812-2000-2999 312-812-3000-3999 312-812-4000-4999 312-812-5000-5999 312-812-6000-6999 312-812-7000-7999 312-812-8000-8999 312-812-9000-9999

Sample Numbers

(312) 812-0000 (312) 812-1234 (312) 812-2000 (312) 812-3333 (312) 812-4444 (312) 812-5555 (312) 812-6000 (312) 812-7777 (312) 812-8888 (312) 812-9999