I need to find most subdomains of a domain. I know there are many options.
I've tried many available in Kali Linux:
dnsmap dnsenum dnsrecon dnswalk fierce urlcrazy
Most of them only find 2 or 3 working subdomains, while using this online tool, it finds many more.
pentest-tools require to buy credits in order to work, I'm trying to find a tool that would retrieve similar results like it. I haven't been successful so far.
How can I get the best results from those tools?