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subfinder

A subdomain discovery tool that discovers 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/subfinder/subfinder.

• Find subdomains for a specific domain:
   
  subfinder -d {{example.com}}
   
• Show only the subdomains found:
   
  subfinder --silent -d {{example.com}}
   
• Use a brute-force attack to find subdomains:
   
  subfinder -d {{example.com}} -b
   
• Remove wildcard subdomains:
   
  subfinder -nW -d {{example.com}}
   
• Use a given comma-separated list of resolvers:
   
  subfinder -r {{8.8.8.8}},{{1.1.1.1}} -d {{example.com}}