rDNS: 193.68.151.34.bc.googleusercontent.com
#Id Port Banner Type Ttl Service
4,419,910,236 22 syn-ack 61
4,255,805,909 22
SSH-2.0-OpenSSH_8.5
response 58 ssh
3,931,303,933 22
SSH-2.0-OpenSSH_8.5
response 58 ssh

This project goes around the Internet and finds services to index them.