Prefix Information

The prefix 121 is part of area code 773 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (773-121-0000 through 773-121-9999).

Browse Numbers in This Prefix

773-121-0000-0999 773-121-1000-1999 773-121-2000-2999 773-121-3000-3999 773-121-4000-4999 773-121-5000-5999 773-121-6000-6999 773-121-7000-7999 773-121-8000-8999 773-121-9000-9999

Sample Numbers

(773) 121-0000 (773) 121-1234 (773) 121-2000 (773) 121-3333 (773) 121-4444 (773) 121-5555 (773) 121-6000 (773) 121-7777 (773) 121-8888 (773) 121-9999