Simple WhoIs is a whois extension for chrome. it's a free extension , it has 132 active users since released its first version, it earns an average rating of 4.00 from 4 rated user, last update is 4169 days ago.
An extension that allows you to quickly lookup important WHOIS information about the site you are on. This displays relevant WHOIS information in the extension popup, it is NOT simply a bookmark to another site where you can look it up. Useful for doing a quick check of the registrar, expiration dates, and/or nameservers of the current domain. Type "whois" and then a domain name in the Omnibox for another shortcut to a quick WHOIS lookup. Powered by http://whothefuck.ru
You could download the latest version crx file or older version files and install it.
English (United States).
100% user give 5-star rating. Read reviews of simple whois
You could find more help information from simple whois support page.
You could send emails to publisher, or check publisher's website.
More about manifest_file of simple whois.
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EDIT: Extension has stopped working and has been that way for months :/ Not too shabby. My old whois extension disappeared and this seems to fill the gap nicely. One suggestion is that the entire whois information should be shown in that tab, not a big fan of needing to open a new tab.
Works better than what I've found so far.
Works just as expected! Quick and easy to read, actually shows the info in the browser rather than just a redirect.