Contact CounterTack Sales

Office Locations

Corporate Headquarters
CounterTack, Inc.
100 5th Avenue
First Floor
Waltham, MA 02451-1208
(Toll Free) 855-893-5428

Los Angeles Office
1639 11th Street
Santa Monica, CA 90404

Sacramento Office
11171 Sun Center Drive
Suite 210
Rancho Cordova, CA 95670
(916) 459-4727

CounterTack Map

Contact CounterTack Product Support

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