Subdomain Finder

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25-02-2023 00:00AM CET
The long maintenance has been finished. The service is now fully operational and pretty fast again! We will of course tweak it a bit here and there to make it even better. Thanks for your patience!

Be aware: When scanning a domain with thousands of subdomains, it may take a while to load the results because we have to do a DNS request to each subdomain to get the IP address.


Status: Ready to scan...

What is a Subdomain Finder?

A subdomain finder is a tool used to find the subdomains of a given domain.

Subdomains are created when a second-level domain is added to a top-level domain. For example, the subdomain "www" is a subdomain of the domain "". A subdomain can be created for any purpose, and there is no limit to the number of subdomains that can be created for a single domain.

Using our subdomain finder can be useful for a number of reasons, such as:

  • Finding all the subdomains of a domain can give you a good overview of its structure and organization.
  • Subdomains can be used to host different types of content or services, so finding all the subdomains of a domain can give you a good idea of what it has to offer.
  • If you're looking for a specific piece of information or service on a domain, subdomains can be a good way to narrow down your search.
  • Some subdomains may be more vulnerable to attack than others, so finding all the subdomains of a domain can help you identify potential targets.
  • Check whether a subdomain is tunneling through CloudFlare
  • Find historical subdomains which aren't linked to any endpoints anymore.

Bug bounties are a relatively new phenomenon, but they are becoming increasingly popular as a way to crowdsource security testing. Many major companies, such as Google, Facebook, and Microsoft, now offer bug bounties as a way to encourage security researchers to find and report vulnerabilities in their products and services.

One of the benefits of bug bounties is that they can help you find subdomains that are more vulnerable to attack. For example, if you find a subdomain that is poorly configured or that has known vulnerabilities, you can report it to the company and potentially receive a bounty.

Thus, a subdomain finder can be a useful tool for both security researchers and bug bounty hunters. It can help you identify potential targets and find subdomains that are more likely to be vulnerable to attack.

Overall, a subdomain finder tool can be a valuable asset when researching a new domain or website. By quickly and easily finding subdomains, it can help you identify related websites and potential security risks.

Performing a scan might take up to 1 minute. So please be patient while we're scanning. After a subdomain has been scanned, we will store the data in our cache for 7 days.

If you have any questions or suggestions, feel free to send an email to [email protected]

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