Our subdomain finder tools allow you to discover the subdomains of any target domain to uncover potential attack entry points. Find systems that are less protected and thus more vulnerable to attacks.
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2.3 Billion+Subdomains
1 Million+Subdomains discovered daily
52,000+Satisfied customers
14+Years of data crawling
Our subdomain finder product line includes:
Lookup
Just take a domain name and instantly get a complete list of subdomains with relevant update dates.
API
With one API call, get a list of all subdomains related to a given domain name to discover any company’s web infrastructure, including yours so you can reduce your potential attack surface.
Subdomains Data Feed
We provide a large subdomain repository with 2.3+ billion records updated weekly and available for download in the form of an exhaustive and well-parsed comma-separated values (CSV) file.
Benefits of Subdomains Lookup
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Based on up-to-date data
Each subdomain search gives you a list of all the subdomains of a domain from a large database gathered in over a decade of data crawling and growing by over 1 million subdomains daily on average.
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Quick results
Just take a domain name and do an instant subdomain enumeration for any target domain.
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Handy
Don’t bother with manual subdomain research with the help of our handy and fast Subdomains Lookup API.
What is Subdomain Lookup?
A subdomain lookup tool, also known as a subdomain finder tool, helps identify subdomains associated with a domain name using passive DNS data. It can have different use cases like supporting cybersecurity research, spotting dangling records, and creating lists of possibly suspicious subdomain artifacts.
Do you know just how much big brands are affected by wild subdomain footprints?
Check our white paper “The Secret Life of Wild Subdomains” for an overview of the subdomain surface of 10 of today’s most spoofed brands.
