Show subdomains for a domain

[lissy93]

Show subdomains for a domain

[fordnox]

got it, thanks for reply ;)

[Lissy93]

I think this has been mentioned before, but there's no way to find all subdomain for a given domain really (unless iterating over common domains, which would be too computationally expensive, and probably against ToS for most sites). I've also not come across an API which does this effectively and isn't too over-priced.

If you've got suggestions of how this may be implemented in a sustainable way, I'd be happy to re-open.

[fordnox]

I agree that it is not possible to find all subdomains, still there are some ways to do it, which in most cases is enough.

Somehow these tools find subdomains:

• https://www.vedbex.com/subdomain-finder/aliciasykes.com
• https://securitytrails.com/blog/subdomain-finder

[Lissy93]

Yes, but they do it by scanning for subdomains - I don't have enough compute to do that inexpensivley.
Security Trails do have an API, but again - it's too costly (it starts at $500/month).

If I had more cash, I'd add this, but as it stands running Web-Check is already costing me more than I expected :/