Show HN: Fast subdomain enumerator written in Rust

Hello!

I'm learning Rust and also information security, so what better way to learn than to put a tool together practicing both skills?

I've tried to use a couple of different tools for subdomain enumeration (part of the Discovery-party when it comes to penetration testing), but none of them were very fast, even if the DNS resolver I pointed them towards is, so I wrote my own tool that leverages concurrency to check a lot of subdomains, fast!

It's written in Rust, main parts being using Tokio and async_channels, and I think it works good enough for a first release. I wanted to get recursive subdomain enumeration to work too, but couldn't figure out how to send into the same channels I'm reading from and knowing when to close the actual channels. Will work on that next!

If you want to check out the project, it's located here: https://github.com/Esc4iCEscEsc/skanuvaty

I'd love your feedback on the code, idea or anything in general! Usually people here have very good feedback, so I'm excited to hear what you think.

Thank you!