usage: subd.py [-h] [-d DOMAIN] [-t THREADS] [-p PORT] [-f FILE]  

optional arguments:
  -h, --help            show this help message and exit
  -d DOMAIN, --domain DOMAIN
                        target domain
  -t THREADS, --threads THREADS
                        set target threads
  -p PORT, --port PORT  connects to subdomains using a target port
  -f FILE, --file FILE  target file that holds subdomains