Owner of the robot : Blue Coat Systems, Inc.

Country : USA

Robot type : probe (does not spider sites)

Description : Web content monitoring and filtering service, for businesses and other organizations.

User Agent transmitted to the visited web server :

  • Mozilla/4.0 (compatible; Cerberian Drtrs Version-3.2-Build-0)
  • Mozilla/4.0 (compatible; Cerberian Drtrs Version-3.2-Build-1)
  • Mozilla/4.0 (compatible;)


IP address range : from to ()

URL for more information : http://www.cerberian.com/

Access control options understood by the robot :

    User Agent to use in the robots.txt file :

    Last visit of this robot logged in June 2007.
    Other informations updated on October 26, 2005.