WhoAPI offers 7 different APIs, start with our whois API now!

Build Something

Past clients include


All it takes is one great idea. They don't come very often, but when they do, it takes someone with great vision to see the road ahead. A phone would still be used only for calls, a watch for telling the time and working from home would be impossible. What's your big idea? Learn what other are building with our Whois API.


Whatever good things we build, end up building us. So why not build something outstanding? Why not build something so difficult that in the process we become great developers? What are you going to build next? With our APIs there's no stopping us! Make the first step and learn how you can build something with our Whois API.

Serving Clients Around The World

We use WhoAPI as an integral part of our automated compliance system. This system enables us to identify potential risks to our network."

Dan Stevens
CEO at Kickbox.com

We use WhoAPI to identify and generate indicators of compromise for further investigation. The information they provide are an essential datapoint.

Jacques Erasmus
King Inc.

For a few years now, we have been using the features of WhoAPI screenshot API successfully. With the new update even more efficiently.

Bruno Rouget
Belgian Entertainment

WhoAPI provides a tremendously valuable service – machine-readable WHOIS data! We’re using it for automatic checks of domain squatting around our trademarks.

Oliver Keyes

I am always on a lookout for obscure APIs and want to get my hands on them before everybody else. Same with WhoAPI, only I used the heck out of them!

Harper Reed
Modest Inc.

What others are saying about us


I like the speed of the provided API and the quality of its results. Besides, I was pleased by the fact that I was able to access multiple tools at once, which allowed me to reduce my expenses.


In Webmaster.Ninja we do not download the resulting thumbnails. We just use the direct links to images provided by API. This is possible because the WhoAPI stores images for 30 days and we update the thumbnails much more frequently and the thumbnails will not expire.

Get ready for

Over the last decade, we've conducted several groundbreaking research, interviews and written several articles in the web hosting industry. Now we are taking this one step further.

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Domain Disclosure:
Dirty Dozen

Learn about the impact of domain names on your business. These domain name fundamentals, case studies, groundbreaking research and twelve unavoidable conclusions could save you thousands of dollars.