How to have different host name for each proxy?

Hey guys, is there any way to have a different hostname for every IP address. I bought 100 ipv4 proxies in order to create multiple accounts on a website and took care of browser fingerprinting and all other stuff. The only way of getting caught is through the hostname because it's the same for all those IP addresses. I know that every problem has a solution, can anyone please suggest me a solution to this. Thanks!

Yes there is a way to have different domain names for each IP. It's just a 1 to 1 relationship.
Why are you so keen on using domain names? You'd probably be better off just sticking to the IPs.