server lookalike?

So my friend was playing Minecraft with me a day ago and he told me he found "the server I was admin on". I told him no, the server had to close a while ago, and he told me the spawn of the server he went on looked exactly like the spawn of Onda's server ! He claimed it looked exactly alike because he saw my youtube videos where I showcased Onda's server. Does anybody know about this lookalike server by any chance? I am going to investigate this.