Addon to check who in group/raid is saved to which instances

Is there something like that? Shouldnt be too hard to get that data via the data-channel of group/raid impov. Would of course be only good or useful if other players must not have it to work.
Something like this WhisperRaidInfo.|||Thanks for the tip, but it only works if the other one has it installed too, so it is not what i search.|||You can't scan other player for IDs imho|||It is impossible to "request" the raid ID from another person without them having an add-on that gives it away. |||Well, thats a shame and should be different, at least when you are in same guild/raid/party. But i guess Blizz wont change that because i don't like it. Thanks for your help!