Prefix Information

The prefix 550 is part of area code 773 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (773-550-0000 through 773-550-9999).

Browse Numbers in This Prefix

773-550-0000-0999 773-550-1000-1999 773-550-2000-2999 773-550-3000-3999 773-550-4000-4999 773-550-5000-5999 773-550-6000-6999 773-550-7000-7999 773-550-8000-8999 773-550-9000-9999

Sample Numbers

(773) 550-0000 (773) 550-1234 (773) 550-2000 (773) 550-3333 (773) 550-4444 (773) 550-5555 (773) 550-6000 (773) 550-7777 (773) 550-8888 (773) 550-9999