Because that's the one that was originally blacklisted, and is currently blacklisted.
Mojang can't fix the SRV bypass thankfully.

 

How I can get on with normal mc

 

We use something called an SRV record to point all traffic from a certain port, this case it's 25565, to a given subdomain.

 

Sounds cool but I have no idea I guess it's like a different IP address to get around the blacklist?

 

Hard to explain, it's a very technical description.

 

Pretty much, except you can keep connecting to mc.ecocitycraft.com or ecocitycraft.com and it won't affect you in any way. So don't worry about it.

 

ok