Subfinder

Subfinder is considered as a successor to sublist3r. It is amazingly fast and finds valid subdomains using passive online sources such as Ask, Archive.is, Baidu, Bing, Censys, CertDB, CertSpotter, Commoncrawl, CrtSH, DnsDB and so on.

  1. Install subfinder. It needs Go to be installed, which we can install by using the following command:
apt install golang

The following screenshot shows the output of the preceding command:

  1. Next, we clone subfinder by using the following command:
git clone https://github.com/subfinder/subfinder.git

The following screenshot shows the output of the preceding command:

Or you can download and save it ...

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