Prefix Information

The prefix 691 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-691-0000 through 312-691-9999).

Browse Numbers in This Prefix

312-691-0000-0999 312-691-1000-1999 312-691-2000-2999 312-691-3000-3999 312-691-4000-4999 312-691-5000-5999 312-691-6000-6999 312-691-7000-7999 312-691-8000-8999 312-691-9000-9999

Sample Numbers

(312) 691-0000 (312) 691-1234 (312) 691-2000 (312) 691-3333 (312) 691-4444 (312) 691-5555 (312) 691-6000 (312) 691-7777 (312) 691-8888 (312) 691-9999