The irredeemable's list on Github. The nodes may be scattered, but they are all institutionally controlled centrally, by Stinc, almost exlusively.
@fulltimegeek can tell you more. This list was intended to eliminate his posts from the front ends that we use to access Steem. Almost all users access Steem using Stinc APIs, and this dependence effectively completely censored @fulltimegeek.
It's actually trivial to do.