Since it's not mentioned anywhere else, this is a freemium app. I dunno what features are missing behind the paywall. Or how much it costs? "Plugin key is only available for Premium members"
I'm unable to find a price anywhere else, and I'm def not clicking the ref link just to find out 🤣🤣🤣

перестало работать. Пишет, что нет интернета

works great

Die Erweiterung ist sehr gut. Für Webentwickler gibt aber ein Problem! Wenn man einer Website über einen "hosts"-Eintrag eine andere IP-Adresse gibt, um sie zu testen bevor man sie im DNS aktiviert, zeigt die Erweiterung *nicht die IP-Adresse an, auf der man sich befindet*, sondern die Adresse, die *im DNS* steht. Für Webentwickler ist das höchst verwirrend.
The extension is very good. But there is a problem for web developers! If you give a website a different IP address via a "hosts" entry to test it before activating it in the DNS, the extension *does not show the IP address you are on*, but the address that is *in the DNS*. This is highly confusing for web developers.

It feels like Rolls Royce in this category.

It's a good extension for DNS lookup. Our https://satisfyhost.com team using this service for many years.

this does not show the current IP address but makes a nslookup for the domain name. the dnslytics information is interesting, but to me the name and description is wrong/misleading

Seems not to work any more. It displays only my one IP-adress. Does not show up in the context-menu of any tab. ff100.0.2, win10 21H2 build 19044.1706

№1

Does not seem to work anymore as of FF 85 . Click a tab and all it does is spin. Shame, seems to be the only tool of its kind at present. Or at least without having to open a developer window.

Note: it did work fine when i first installed it (2019?)