100 5th Avenue
Waltham, MA 02451-1208
(Toll Free) 855-893-5428
Los Angeles Office
1639 11th Street
Santa Monica, CA 90404
11171 Sun Center Drive
Rancho Cordova, CA 95670
CounterTack Sentinel Technical Support team is available at 1-800-617-0664.
To reach our International Support team, dial 310-953-4742.
Responder PRO and Active Defense Technical Support can be reached at 916-459-4727.
Technical Support can always be reached by emailing firstname.lastname@example.org