This extension displays detailed information about the current website. The information can be used for online investigation and SEO purposes.
See IP info like (IPv4 and IPv6): location, DNS, whois data, routing, domain neighbors, blacklists and ASN information. Including a shortcut to Your public IP Address (myIP info).
See domain info like: Alexa en Quantcast ranking, DMOZ info, social media activity, WOT ranking, whois data and PageRank of every domain.
See provider info like: BGP, IPv4 subnets, IPv6 subnets, connected providers (peers), hosted nameservers, hosted domains, number of spam hosts, bogon subnets and whois data.
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This extension is also available for Firefox, Opera and Safari.
https://addons.mozilla.org/en-US/firefox/addon/ip-address-and-domain-info/
https://addons.opera.com/extensions/details/ip-address-and-domain-information/
http://www.macupdate.com/app/mac/39018/ip-address-information