altdns

root@kali:~# altdns -h
usage: altdns [-h] -i INPUT -o OUTPUT [-w WORDLIST] [-r] [-n] [-e]
              [-d DNSSERVER] [-s SAVE] [-t THREADS]

options:
  -h, --help            show this help message and exit
  -i, --input INPUT     List of subdomains input
  -o, --output OUTPUT   Output location for altered subdomains
  -w, --wordlist WORDLIST
                        List of words to alter the subdomains with
  -r, --resolve         Resolve all altered subdomains
  -n, --add-number-suffix
                        Add number suffix to every domain (0-9)
  -e, --ignore-existing
                        Ignore existing domains in file
  -d, --dnsserver DNSSERVER
                        IP address of resolver to use (overrides system
                        default)
  -s, --save SAVE       File to save resolved altered subdomains to
  -t, --threads THREADS
                        Amount of threads to run simultaneously