CertCrunchy is just a silly python script that either retrieves SSL Certificate based data from online sources, currently https://crt.sh/, https://certdb.com/, https://sslmate.com/certspotter/ and https://censys.io or given a IP range it will attempt to extract host information from SSL Certificates. If you want to use Censys.io you need to register for a API key. Also Read Hcxdumptool …