# Install
go get github.com/subfinder/subfinder
# Basic usage
subfinder -d example.com > example.com.subs
# Recursive
subfinder -d example.com -recursive -silent -t 200 -v -o example.com.subs
# Use censys for even more results
subfinder -d example.com -b -w wordlist.txt -t 100 -sources censys -set-settings CensysPages=2 -v -o example.com.subs
amass enum --passive -d example.com -o example.com.subs
# Install
go get -u github.com/tomnomnom/assetfinder
# Basic usage
assetfinder [--subs-only] <domain>
# Install
GO111MODULE=on go get -u -v github.com/lc/gau
# Extract subdomains from output
gau -subs example.com | cut -d / -f 3 | sort -u