Most of the sites are behind an anti-ddos service like Cloudflare, so it can be hard to determine where they are and their actual IP address.
Take for instance
https://www.bitdice.me/If you look up their IP you get 104.20.15.186 which is a Cloudflare server in the US.
If you do a gambling website you will need a decent amount of storage and a server that can handle a ton of bandwidth per month.