Here’s one of the first extensions to use the new webRequest API in Chrome 17. It watches as the browser downloads a webpage, picks out various bits of protocol-related information, and squishes it down into a convenient table. Everything’s 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:
– A padlock icon, for HTTP, HTTPS, or a mix of both. This is helpful for tracking down mixed content warnings, but you shouldn’t treat it as absolute security advice.
– The IPv4 or IPv6 address. If connections span more than one IP, then the most recent one wins. When the connection is still open, the address is highlighted in yellow.
– A “cached” symbol. This mainly exists to warn you that no actual connections took place, so the IP address might be stale.
– An “S” for WebSocket handshakes in Chrome 58+.
For convenient copying, clicking on a hostname or address will select it. There’s also a right-click option to look up IP addresses with bgp.he.net. I’m not affiliated with that service, but it’s my personal favorite.
IPvFoo is Free Software (Apache 2.0 license).
I love this ext but there is a unexpecting behaviour happened, when i accesed to a web Ipvfoo gives me more results in one OS (xp old chrome) than in Win7 (new chrome).
In XP when I go to larazon_es show me 39 results but same web in win7 shows just 31 and in win7 virtualmachine even a lot less.
Why that happend??
I love this browser extension however the only issue I see is that recently it has stopped working on Chrome Dev on MacOS Catalina — every website shows the generic white “IPvFoo” icon instead of the “6” or “4”. Extension works great with Chrome Dev on windows 10 so i’m not sure what has changed.
This is an amazingly useful extension for those of us trying to get up on IPv6. I brought up a HE.net tunnel for this LAN, and got IPs assigned to all the local devices. I didn’t see a really good way to see which sites are IPv6, and the extent of their use.
I’m impressed seeing how many organizations are up now. Not too long ago, it was rare at best. My ISP still doesn’t support IPv6, but the HE tunnel lets me.
The connection chart is nice, so I can see the extent of the site’s implementation.
Ferramenta vem se transformando em indispensável para quem trabalham com infraestrutura de TICs.
hao
很好用
It’s an awesome extension. There is however an issue with the new Chrome 69 where after a while the icon reverts back to the default IPvFoo image instead of showing 4 or 6 and you need to reload the website to get it to show properly.
good
Veri nice for checking live websites ip address.
nice
Very useful tool! Just what I need!
Amazing tool! It is very useful.
非常有用的扩展,实时查看当前网页连接的网站,使用的IP
这个看到的ip才是真的,有些用dns查的不是实际访问的ip,国内用户福利
I’m not a developer, just someone interested in seeing IPv6 penetration. IPvFoo is great for seeing not just the main page but the components are or are not using IPv6. (Bad news: as of this writing, almost every site I use is either IPv4-only or has an IPv4-only component, and that’s even after filtering out most advertisements via AdBlock Plus.)
Good.
One of the few extension that report the ip of the site during the connection and not a resolution made by someone else.
As a network engineer, I find this very helpful for seeing what IP version various sites are using.
非常好用!!!
Very handy tool.
Really cool way of seeing if the site is connecting via ipv6 or ipv4
Been using it for years and love the extension. Noticed that it recently does not appear to be working with Chrome. Has anything changed?
Very Coooool ))