IRCd Config/Unreal3.2

allow {
           ip             64.62.228.82;
           hostname       *@*;
           class           clients;
           maxperip        800;
};
allow {
           ip             207.192.75.252;
           hostname       *@*;
           class           clients;
           maxperip        800;
};
allow {
           ip             78.129.202.38;
           hostname       *@*;
           class           clients;
           maxperip        800;
};
allow {
           ip             109.169.29.95;
           hostname       *@*;
           class           clients;
           maxperip        800;
};

See also http://www.unrealircd.com/files/docs/unreal32docs.html#cgiirc

For UnrealIRCd 3.2.5 or higher see Enable_Mibbit_on_Your_IRC_Server#Unrealircd