cross-posted from: https://lemmy.basedcount.com/post/113726

I couldn’t find any tools to check this, so I built one myself.

This is a little site I built: the Defederation Investigator defed.xyz. With it, you can get a comprehensive view of which instances have blocked yours, as well as which ones you are federated with.

The tool is open source and available on GitHub. Hopefully someone will find it useful, enjoy.

    • bug@lemmy.one
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      1 year ago

      Will it though? It’s essentially public info already, and is a core part of how Lemmy works.

      • bassomitron@lemmy.world
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        1 year ago

        Definitely, but I can see what the TC is saying. This tool simplifies the process even further for troll(s) who campaign against those trying to evade them.

    • Mane25@feddit.uk
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      1 year ago

      How can it be abused and to what end? You can go to any (instanceurl)/instances to see what it’s federated to.

      • poVoq@slrpnk.net
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        1 year ago

        A similar tool has existed for years and it is run by Kiwifarms with the primary purpose of ban evasion for trolling and harrassment campaigns.

      • 520@kbin.social
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        1 year ago

        You get a list of the instances that have defederated from you, and you mount a coordinated attack against them

      • maegul (he/they)@lemmy.ml
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        1 year ago

        On mastodon, in my circles at least, it’s taboo to link to the equivalent for mastodon. It makes any harassment campaigning, trolling and re-routing much easier. Unless you’re willing to build the tool yourself, you just don’t really know these numbers. Once you use the tool (and I have seen and used it), you see very easily who the big defederators etc are.

        I’m going to bet that this tool is not worth what ever value or curiosity it provides. It so easily puts targets on instances backs, including smaller instances that are probably easy targets.

        • Mane25@feddit.uk
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          1 year ago

          I think it’s probably the most important piece of information to have when choosing a server.

          While a lot of people have said “it can be used for harassment”, I’ve not seen any information yet on how that could be. On the contrary, I think being open and up-front about federation policies is important for a healthy community - it avoids arguments about going behind people’s backs.

          • maegul (he/they)@lemmy.ml
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            1 year ago

            On the contrary, I think being open and up-front about federation policies

            I’m with you on the transparency and policies. Completely.

            But there’s a big difference between policies and a public page that tells the trolls “you have been defederated by all of these people”.