Using DomainTools to look up the WHOIS information of domain names is a snap.
The oldest domain research tool that provides WHOIS data on millions of domain names, is a very busy destination on the Internet.
With an Alexa traffic rank of 2,000 DomainTools relies on the use of a slow down mechanism to prevent data scrapers from grabbing its valuable data.
It does so by only allowing a small number of WHOIS queries per day without an account, and by using a captcha validation system provided by Google’s reCaptcha.
There is, however, one instance that the captcha would fail – this singularity is pictured below. 😀
Mr. Robot using DomainTools.
