Prefix Information

The prefix 670 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-670-0000 through 312-670-9999).

Browse Numbers in This Prefix

312-670-0000-0999 312-670-1000-1999 312-670-2000-2999 312-670-3000-3999 312-670-4000-4999 312-670-5000-5999 312-670-6000-6999 312-670-7000-7999 312-670-8000-8999 312-670-9000-9999

Sample Numbers

(312) 670-0000 (312) 670-1234 (312) 670-2000 (312) 670-3333 (312) 670-4444 (312) 670-5555 (312) 670-6000 (312) 670-7777 (312) 670-8888 (312) 670-9999