In the past, Google has taken extreme action by banning all sites on an specific host and even on a specific sub domain. Back in the day, SEOs wanted their own IPs and 10+ years ago Google agreed but more recent advice from Google said IP addresses don’t matter much these days at all.
Truth is, most SEOs I know, don’t worry about securing their clients a dedicated IP for their site. In fact, most large and highly ranked sites are served over CDNs like Amazon, CloudFront, Google, Microsoft and other platforms.
Google’s John Mueller was asked if it was safe to host your site on a CDN after one SEO said he stays away from them in fear of getting on an IP range that is spammed too heavily. John said that it isn’t a problem these days for the most part. He has never seen Google ban all the sites on a real CDN.
John said at the 1 hour and 1 minute mark “for the most part I don’t think you’d have any problems using a CDN.” Here is what he said:
He also added that you don’t really need unique IP addresses these days. The question was “So your’e basically saying but in 2016 2017 unique IPs are not even needed anymore?” John responded, “for the most part you don’t really need that.”
Here is the video embed:
Forum discussion at Google+.