Skanuvaty
Dangerously fast DNS/network/port scanner.
Features:
- Finds subdomains from root domain
- Finds IPs for subdomains
- Checks what ports are open on those IPs
Outputs a handy .json file with all the data for further investigation.
Runs as fast as your computer/network/DNS resolver allows it to be. Test run for 10.000 subdomains tested all of them in ~20 seconds with concurrency set to 16 on a machine with 16 (logical) cores.