I think we all should be grateful to those guys running
http://il2.com.ru/en/links.php.
And I just refreshed the list of servers in my IL2SFB Connector.
Many were not active for long time, probably they will never come back. Sigh.
Added one which is new for me:
Kiwi at War. 121.75.7.151:21000. (Can be seen in HL as well).
A lot of "historical" and non historical maps. Some are quite challenging for bomber/fighter-bomber missions. AI allies and enemies. I saw no players there and their forum looks as abandoned since 2016. Still I recommend to try - at least to pound some moving ground/naval targets or to have fun with AI.
Happy flying in online skies