Directories with the Same IP C Class

What are C-class IPs?
For SEO purposes, a class C IP has the first 3 parts of the address are the same "e.g. 65.96.121.167". Sites hosted on the same c class can be hosted at the same host, or even on the same physical server. Google may see sites on the same c class as having a "relation" with each other and thus treat them differently. It is quite possible that multiple links from sites on the same class C IP range are not given full weight. Here is a handy class-c IP Checker.