Can someone explain what known alts mean on the server armour website?  and how or where the data  drawn

My own game account has 54 known alts none of which mean anything to me I don't play alts whatever that may mean. i play my own game account on a regular server.  is it same IP or played on the same server or how is the link established? 

Same thing happening here.
My account has 30 known alts and I don't know what this means.

simular to any other tracking site, you've been spotted with the same IP. kind of faulty and should just be taken with some salt

It's a bit more complexed to explain on a open forum, than solely tracking an IP. When you think there is an error, it's best to get in touch with me on discord for me to investigate and fix. There has been some changes in the algorithm in the last 6 months, so not sure if this is still an issue for you.