your questions are very vague lol. what do you mean from mainframe info? do you own a mainframe and need it's info? if so z/os commands are pretty similar to even windows or linux, with ipconfig or netconfig showing network related stuff. 

not sure if im reading this right but i'm not sure what you mean by specified domain lol, do you want a sitemap? there are a few websites that give you sitemaps by entering your websites url.