Search Engine Optimization or C-Class IP hosting for SEO is a process of hosting websites from different C class IP address. Since an IP address is the only way to locate your website for search engines, it is important that you choose your IP address with care and also make sure that your IP addresses find a good ranking when it goes through a search engine.
When a person decides upon a SEO hosting with a C-Class IP address, he gets an advantage over the others when a related search is generated. A C-class IP address has a higher chance of finding the top places while a search is generated. Also A c-class IP address will be ranked better based on the algorithms followed by Search engines.
This also prevents your site by getting noted as hosting multiple sites from the same IP address. So a C-Class IP address perfectly does the ultimate job of a SEO hosting of getting increased traffic to your site.