Find a subdomain of domain

Hacking Truth

Find a subdomain of domain ( OR )

We start with jumping into kaliLinux"s Terminal and using the first and most widely used tool Fierce. Fierce is a tool with its help you can find subdomain of domain And if you are looking for domain hijacking, domain spoofing, domain hacking, find vulnerability in DNS, etc. so, it in the domain, then this toll can be very helpful for you.  Find a subdomain of domain ( OR )

 Discovering subdomains of a domain is an essential part of hacking reconnaissance and thanks to following online tools which make life easier.
Having unsecured subdomain can lead to a serious risk to your business, and lately, there were some security incidents where the hacker used subdomains tricks.

Find a subdomain of domain ( OR )

The most recent one was Vine where the entire code was available to download from a vulnerably exposed subdomain.
If you are a website owner or security researcher, you can use the following tools to find the subdomains of any domain.


We don't always we have a situation where a client has defined a full detailed scope of what needs to be pentested. So we will use the following mentioned recipes to gather as much information as we can to perform a pentest

For Help  

 To launch fierce, we type fierce -h to see the help menu:

Find a subdomain of domain ( OR )

 Perform a Subdomain

 To perform a subdomain scan we use the following command:

fierce -dns -threads 10

fierce -dns -threads 10

The following screenshot shows the ouput of the preceding command:

Find a subdomain of domain ( OR )

In this article, we tried to share our knowledge about subdomain which may help you to Find a subdomain of domain . Share your thoughts through comment box. I hope you liked this post, then you should not forget to share this post at all.

Thank you so much :-)


This was written for educational purpose and pentest only.
The author will not be responsible for any damage ..!
The author of this tool is not responsible for any misuse of the information.
You will not misuse the information to gain unauthorized access.
This information shall only be used to expand knowledge and not for causing  malicious or damaging attacks. Performing any hacks without written permission is illegal ..!

All video’s and tutorials are for informational and educational purposes only. We believe that ethical hacking, information security and cyber security should be familiar subjects to anyone using digital information and computers. We believe that it is impossible to defend yourself from hackers without knowing how hacking is done. The tutorials and videos provided on is only for those who are interested to learn about Ethical Hacking, Security, Penetration Testing and malware analysis. Hacking tutorials is against misuse of the information and we strongly suggest against it. Please regard the word hacking as ethical hacking or penetration testing every time this word is used.

All tutorials and videos have been made using our own routers, servers, websites and other resources, they do not contain any illegal activity. We do not promote, encourage, support or excite any illegal activity or hacking without written permission in general. We want to raise security awareness and inform our readers on how to prevent themselves from being a victim of hackers. If you plan to use the information for illegal purposes, please leave this website now. We cannot be held responsible for any misuse of the given information.

- Hacking Truth by Kumar Atul Jaiswal

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