system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Can I "build" a server and give it whatever ip I want?

By server I mean a website, but without registered domain. I mean you type the ip in your browser and there is your site. If you can, then what would happen if I have the same ip as google? And what if the site is temporary down? Thanks!
gpt
IP addresses are a lot like ZIP (aka postal) codes.  If you want to declare your ZIP code to be 60601-2015, that's certainly your choice, but don't expect the US Postal Service to deliver your mail to that address unless you just happen to live in the right block in Chicago.

You don't need a name -- a web site will work just fine with simply an IP address.  But you have to get the IP address assigned to you by somebody who acknowledges that the IP address is within their management realm.