Prefix Information

The prefix 639 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-639-0000 through 312-639-9999).

Browse Numbers in This Prefix

312-639-0000-0999 312-639-1000-1999 312-639-2000-2999 312-639-3000-3999 312-639-4000-4999 312-639-5000-5999 312-639-6000-6999 312-639-7000-7999 312-639-8000-8999 312-639-9000-9999

Sample Numbers

(312) 639-0000 (312) 639-1234 (312) 639-2000 (312) 639-3333 (312) 639-4444 (312) 639-5555 (312) 639-6000 (312) 639-7777 (312) 639-8888 (312) 639-9999