Basic server settings can be found in the Discord channel www.discord.gg/HumanitZ

Interesting info:
Server IP - 173.240.150.222:25565
Location - United Kingdom.
Maximum online - 16 players.
Player spawn - optional.

XP Multiplier: х2.
PvP: disabled.
Damage, health, zombie and NPC speed - maximum, which makes it close to hardcore.