it's a plugin called Permissions.
It depends on the server's owner. There is no way of unbanning yourself.
If its not your server you can not, the server owner only can. If you have your own server, go into the console of the server and type in /op YourMinecraftUsername
if your the server owner there is an setting for it
it means the server has gone down such as minecraft server has crashed or the server owner has lost Internet connection
A minecraft server adress is the location on the internet in which the Minecraft server is stored on. Minecraft server addresses are often a set of four numbers, such as 000.000.000.000(:25565). If the owner of a large Minecraft server has a website, it is not uncommon for the address to be something like this: "hub.worldofkeralis.net".
you have to be the server owner to change it.
It is a special number for each server, decided by the computer that the server is hosted on. The ip can be changed by the server owner
The Risk is that someone could hack your Minecraft server and get Owner rank, and they could probly find you IP adress
You would have to ask the owner of the server about that, it varies between servers.
Check with a server mod or server owner about the faction mod he/she uses
a Hamachi server is a free version of a server to run. The owner doesnt have to pay anything to run it
A Minecraft server adress is the location on the internet in which the Minecraft server is stored on. Minecraft server addresses are often a set of four numbers, such as 000.000.000.000(:25565). If the owner of a large Minecraft server has a website, it is not uncommon for the address to be something like this: "hub.worldofkeralis.net".