In my experience this is 100% the case with all IaaS providers. AWS's entire IP space is basically on all email block lists for example.
EDIT: Just to clarify, AWS has a lot of IPs, over 100 million [1]. Let’s just speculate that 1/50th might be in an overall pool for customer allocation. Do you really think the majority of 2M IPs would come back blacklisted in some form? I haven’t dug in to this to actually see if this is the case, but it would seem laughable to even begin to think that this might be the case..
[1] https://toonk.io/aws-and-their-billions-in-ipv4-addresses/in...