Contact us for information and support.


Current customers can call our support line at (312) 477-7450 (option 1). If you get voicemail, please leave a message with your call-back information.


Current customers can send support questions to the emails below. Your email will be returned within 24 hours.


CNX is located just north of Chicago’s Loop.
700 N Green Street, Suite 304
Chicago, IL 60642

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