
Spreading a network across multiple hosts separates the IP address and the server, and Google has said neither one sets your rankings. Most of the other things that connect your sites, from the registrar record to the analytics ID, move with you to every host. What multiple hosts really adds is admin: a login, a renewal and a PHP schedule per site. For three sites that is a fair trade. Past that, we think one SEO host with separate addresses and nameservers per site is the better one, and the calculator below lets you test that against your own numbers.

A bad neighborhood IP is mostly not a ranking problem: Google’s spam policies describe links and behavior, not addresses. What an address’s history really costs you is rejected mail, challenged traffic and a cleanup you run yourself. We scanned the 512 addresses around our own site against two blocklists to show what a real neighborhood looks like, and how to check yours in five minutes.
A CDN changes what your public A record points at. It does not give you IP diversity, because everything behind it still shares one origin, one account and one fate. We ran the lookup on our own network to show exactly what a proxy hides and what it leaves in plain text.
SEO VPS hosting buys allocated resources, root access and software freedom. It does not buy more IP diversity, so upgrade when a capability is blocked, never when a site counter passes a number.
Class C IP SEO is not a ranking factor and never was. In 2026 it remains a risk-management purchase: it contains reputation damage and protects reachability, which is what AI answer engines actually depend on.