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.
500 free API requests. No credit card required.
Just take a domain name and instantly get a complete list of subdomains with relevant update dates.
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.
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.
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.
Just take a domain name and do an instant subdomain enumeration for any target domain.
Don’t bother with manual subdomain research with the help of our handy and fast Subdomains Lookup API.
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.
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.Download white paper