The chat_properties API will return one of 2 sets of servers (either event or main chat). The new IPs aren’t set in stone yet, so I’ll add to this thread as we roll things out.
You can probably just hardcode:
https://api.twitch.tv/api/channels/night/chat_properties (main chat cluster)
https://api.twitch.tv/api/channels/riotgames/chat_properties (event chat cluster)
This will be a “graceful” transition, so we will not split rooms as we add new servers.