Find domains and subdomains potentially related to a given domain.

If you have Go installed and configured (i.e. with $GOPATH/bin in your $PATH):

go get -u github.com/tomnomnom/assetfinder

Otherwise download a release for your platform. To make it easier to execute you can put the binary in your $PATH.

assetfinder [--subs-only] <domain>

Please feel free to issue pull requests with new sources! :)

• crt.sh
• certspotter
• hackertarget
• threatcrowd
• wayback machine
• dns.bufferover.run
• facebook
  • Needs FB_APP_ID and FB_APP_SECRET environment variables set (https://developers.facebook.com/)
  • You need to be careful with your app's rate limits
• virustotal
  • Needs VT_API_KEY environment variable set (https://developers.virustotal.com/reference)
• findsubdomains
  • Needs SPYSE_API_TOKEN environment variable set (the free version always gives the first response page, and you also get "25 unlimited requests") — (https://spyse.com/apidocs)

• https://api.passivetotal.org/api/docs/
• https://community.riskiq.com/ (?)
• https://riddler.io/
• https://www.dnsdb.org/
• https://certdb.com/api-documentation

• Flags to control which sources are used
  • Likely to be all on by default and a flag to disable
• Read domains from stdin