What is IPvFooBar?
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Fork of IPvFoo New features: WHOIS, reverse DNS, ARIN and RIPE hyperlinks, fixes. Uses Google DNS (dns.google).
IPvFooBar is Free Software (Apache 2.0 license).
Display the server IP address, with a realtime summary of IPv4, IPv6, and HTTPS information across all page elements. IPvFoo uses the webRequest API to extract protocol-related information as a webpage downloads, and summarizes it into a convenient table. Everything is captured and displayed privately, without creating any additional network traffic.
The first thing you'll see is an icon in the location bar. A large 4 or 6 shows whether the outer page was fetched using IPv4 or IPv6. If the page contains elements from other domains, then smaller numbers will appear alongside for those.
When you click the icon, a table pops up, containing a row of information for each domain:
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Add-on safety
Risk impact
IPvFooBar requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk likelihood
IPvFooBar has earned a fairly good reputation and likely can be trusted.