Shodan is designed to provide information about devices connected to the internet, such as the types of devices, their IP addresses, and the services they are running. This information is essential for penetration testers to locate potential targets and understand their network landscape. The correct answer is 'IP addresses, device types, and services'. The other options either do not directly relate to the primary information obtained from Shodan queries or only partially describe the vast data Shodan could return, but not as its primary set of information.