Chrome //
Extensions 
Chrome
Web store
select chrome_id_no,plugin_tag_line,plugin_name,plugin_icon,sitemap_url,oldvsnew_comment from final_chrome_totaldata_sept2022 where MATCH(plugin_name) AGAINST('+whois +dns +lookup' IN Boolean MODE) order by users desc
WebRank Whois Lookup
Check WHOIS details including nameservers, contact information, registration details as well as creation and expiration dates.
Domain Availability Checker and Whois Lookup
This plugin checks a domains availability straight from your toolbar. Perfect for web designers/developers.
Web Adviser/Whois Lookup
Norton Antivirus Site Adviser. Instant Web Reviews/Comments about any Pages of ANY Websites. Whois Lookup. IP Address Blacklist™
Asuka.IO Whois - Domain Name Lookup Tool
Lookup domain information of website that you are currently browsing
Whois DNS Lookup
Whois DNS Lookup is the ultimate Chrome extension to find the DNS for any website, Just one click from the navigation bar.
Domain Name Registration Data Lookup (WHOIS)
This tool gives you the ability to look up the registration data for domain names
Benmi.com Whois Lookup(Context Menu version)
Benmi.com Whois Lookup(Context Menu version), you can select the domain name directly in Chrome directly in the context menu.
Whois Lookup By Mr. Deleted
The official mrdeleted.com Whois Lookup. Can search avalailability at various domain registrars if it is no whois is showing.