1，subDomainsBrute安装

git clone https://github.com/lijiejie/subDomainsBrute.git

sudo pip install dnspython gevent

╰─➤  cd subDomainsBrute
╰─➤  python subDomainsBrute.py
╰─➤  python subDomainsBrute.py google.com
╰─➤  head -n 5 google.com.txt
academico.google.com            172.217.160.68
ap.google.com                   172.217.160.100
amp.google.com                  172.217.161.174
careers.google.com              172.217.24.14

参考：

1. subDomainsBrute github