Apparently, Deutsche Telekom is now in the anti-drone business, utilizing a partner toolkit - monikered 'DroneTracker', and branded - interestingly - the 'Magenta Drone Protection Shield'...

'DroneTracker, developed by Dedrone in Kassel, is the key system that detects drones automatically by means of various sensors – such as video cameras, radio frequency scanners, and microphones – and repels them if necessary. At its core is smart software that is able to distinguish drones from birds, helicopters, and other flying objects safely, and even to recognize specific drone models.' - via HelpNet Security