I stumbled on the fact that shodan can search any internet-connected device (no need to explain further, you know what I mean). You can configure shodan in a kali system — that is, you don’t have to go to the official https://www.shodan.io/ site to search; you can just type commands directly in the kali terminal. First, register a free account on shodan NO.1 
NO.2
NO.3
After registering successfully, get your APIkey in your account center. Then run the following command in the kali terminal
You can select a module and view the parameters that can be configured under that module
Configure the QUERY and SHODAN_APIKEY option parameters (SHODAN_APIKEY is the APIkey given to you in your shodan account after registration; change the part marked with the red line to your own key)
Next you can run commands to scan host information 

