https://github.com/blacklanternsecurity/bbot
bbot -t <domain> -f subdomain-enum -rf passive
anubis
certspotter
crtsh
digitorus
dnsdumpster
hackertarget
leakix
myssl
alienvault
passivetotal
rapiddns
riddler
sitedossier
threatminer
urlscan
waybackarchive
bevigil
binaryedge
builtwith
c99
censys
chaos
fullhunt
github
hunterio
securitytrails
shodan
virustotal
zoomeye