subfinder

Discover valid subdomains for websites. Designed as a passive framework to be useful for bug bounties and safe for penetration testing. More information: https://github.com/projectdiscovery/subfinder.

• Find subdomains for a specific domain:

subfinder -d example.com

• Show only the subdomains found:

subfinder -silent -d example.com

• Show only active subdomains:

subfinder -nW -d example.com

• Use all sources for enumeration:

subfinder -all -d example.com

• Use a given comma-separated list of resolvers:

subfinder -r 8.8.8.8,1.1.1.1,... -d example.com