Find Subdomains Instantly

Get an insider’s look at the infrastructure of any company. This tool can find subdomains and reveal analytical information on companies, security gaps and vulnerabilities.
Parsing the Internet
We collect broad data using a self-developed subdomain finder and provide access to the largest sub database on the web
Keeping Data Fresh
Our info stays up-to-date and relevant through daily updates and evaluation
Store Info Offline
Download, store, and access the information offline; operate it at your own convenience
Why Use FindSubdomains service?
Pentesters and Security Engineers
Our subdomain finder allows security engineers to monitor vulnerabilities, identify gaps and weaknesses to prevent attacks. With FindSubdomains, pentesters can check the endpoints for vulnerability, including subdomains in the development environment, technical domains open to the public, and much more
System Administrators
Dealing with mass data made simple — system admins can find subdomains to optimize and support their organization’s infrastructure; collect useful info, monitor DNS records and certificate encryption changes. FindSubdomains overall improves sysadmins work speed and efficiency
Business Analysts
Our Subdomain finder helps Analysts to gain analytical information on any organization in the world. Business analysts can evaluate competitors, foresee changes and developments in their business; get an insider look at new features before they’re launched. This tool lists all the subdomains by subnets (including indexed and development pages),IPs, AS numbers — anything an analyst would need
Non-registered user can see up to 50 subdomains per any domain
What You Get With Our Subdomain Finder
Spyse Credits
The Spyse credits system opens the door to the whole range of our services. We eliminate the need for individual subscriptions, allowing you to purchase and spend credits interchangeably between services. Sign up to findsubdomains and receive 3 credits for free which give you roughly 300 search, filter, and store requests. Once per month, we wire 1 complementary credit to your account. We hope it will be enough to get an in-depth view of all Spyse services
Public API

Spyse allows both signed-up and guest users access to our API.

API (Application Programming Interface),its a toolkit of various procedural operations utilized to foster productive interaction between different software systems, platforms, applications or their components. It allows for a quicker and more efficient way to operate of all Spyse's services. The API is also flexible and lends itself to a plethora of uses — you can connect it with your software products and applications for speed and convenience. FindSubdomains employs a credits system, so using our subdomain finder tool and the API you can download up to 10k data rows for only one credit

Choose method to try API now
How to Find Subdomains Instantly
1. Search Info
Enter any domain name (like your competitor’s website or
2. Get the Results
We store and update data daily, giving you immediate access. No queue
3. Keep the Data
After you find all subdomains of a domain, feel free to download a TSV file and access it offline
Enterprise plan
Need more data or custom features? Feel free to contact us
Filtering and pagination will use Credits
This is paid action