I play minecraft and got an ip ban on a server. How do i change that ip/proxy so it will let me in?

I play minecraft and got an ip ban on a server. How do i change that ip/proxy so it will let me in?
Added (1). I play minecraft and got an ip ban on a server. How do i change that ip/proxy so it will let me in? I have never visited the sever before and it said banned ip: the ban hammer has spoken. I don't want to get another account for that server but i guess i could

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