Whois, DNS and more.
Whois+ is an extension which allows you to do a whois, dns check, email verification and ping. When clicking the logo it will take the url out of the tab. If you don't want that url you can change it.
After the url/email/ip is entered you can select what it should do. When you clicked the button it will open a new tab with the results.
In the options menu you can select from multiple sites where you can do the tests.
Suggestions and requests can be done at the support and FAQ link.
The difference between WhoisX and Whois+ is that WhoisX adds the logo in the address bar and Whois+ adds the logo in the extensions bar.
WhoisX can be found at https://chrome.google.com/extensions/detail/kbjjnnpgennpekgckklkemdcalholacg/ .