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Global Headquarters

3500 Lacey Road, Suite 100
Downers Grove, IL 60515
Phone: (630) 678-8300
Fax: (630​) 678-8384

International Offices

Click here for a complete listing of CompTIA's international offices.

Customer Service

Visit our Help section for answers to the most common questions we receive.

Our representatives are available to assist you Monday through Friday, from 7:00 a.m. to 7:00 p.m. CT.
(630) 678-8300
(866) 835-8020

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