This event is being held on RK2019!
Currently, there are 5 events scheduled to run through August and up to level 170.
From their announcement:
For those of you who haven't participated before, Ironman is a challenge to level and take down bosses with only the assistance of other Ironman players. This means we don't use OSB, paid items, and we obtain all of our own loot!
As always Ironman is a PvM challenge at heart, we welcome everyone to take part in the classic Anarchy Online Ironman experience!
So join the Discord to join the fun! AO Ironman Community
Once you join, there you will be greeted by a Code of Conduct you must read and agree to as rules to follow throughout the challenge.
You'll find "Event Details" directly underneath the AO Ironman Community server header. Clicking the green Event Details gives you current information as needed.
If you have any questions regarding participating in Ironman be sure to ask a Moderator in Discord!
Best of Luck to all the Ironman Participants!