Let’s say you want to link to your money site from another site on the same server and IP. Bad idea? Not necessarily. You can cover up your IP with Cloudflare’s IP and change your SOA records at the same time.
If you are doing any type of SEO, you probably know that you should always put your PBN sites on separate servers in order to make your network as unique as possible.
However, putting just one site on one server seems a bit expensive. Not only do you have to pay for the domains but also each server comes with a hefty monthly or annual fee.
Thanks to Cloudflare, we can easily put 2-3 additional domains on the same server without worrying too much about leaving a footprint for Google. Each account you set up will differ in nameservers and also in D class IP. It is not enough to hide dozens of website, but with 2-3 extra domains on the same server even with only D class unique IP should be fine.