Ok, I understand the concept of having separate C-class IPs, but there are a few more questions that I have regarding setting up a network with this. 1. First does it make a difference if the sites are on separate C-Class IPs that are shared with others? Or do they need to be dedicated C-Class IP accounts. 2. Do you need to have private registration for the domains to be effective, or are people using different domain registrant info, or does it even matter? 3. Are there common rules for linking within? 4. Any other tips would be great about this matter and appreciated. Thanks
When referring to the"concept" of separate c-class IPs, I mean that I understand the purpose in that it is used for SEO purposes and in particular for those who have a network of sites. And as they relate to linking in between.
1. No it does not matter if other sites that you do not own are on the same C-Block as your sites because your sites will not be linked to them. So there is no need to have a dedicated server, even then getting IP's that are on separate C classes can be quit difficult as they will want to know what you need all of them for. SEO/link building excuse will no work with them. 2. I would make our whois info private for all of the domain names as well as purchase your domain names from several different registration companies. This way the private into will not all be from one place. 3. Try to avoid using site wide links on all of your pages, it will look more natural if you have the links spread throughout each site. Having all of the links on every page of every site can still draw some flags. If possible see if you can use different DNS servers (or even custom ones) for a few of your sites so the whois info does not show all of the sites pointing back to the same hosting company.
Thanks SEMSpot, that was very informative. Now, I wonder how I can get different DNS servers from those hosting companies that offer this type of hosting.
It has no importance if they are on a shared or dedicated IP as most sites are on a shared IP. Even Google is on a shared IP There are a few critical factors that if not followed will make the different c classes useless: 1) Having the same whois info. Try changing it for every domain or use domain privacy. 2) Having the same nameservers for multiple C classes. That would just show google that they are on the same server. You should have a nameservers pack for each C Class. If not, you're just wasting your time. 3) Different RDNS for each C Class that matches the nameservers. In short the RDNS entry for an IP is the domain you are getting when doing a reverse lookup. For instance if you have your site on a certain IP and have the nameservers ns1 and ns2.somedomain.com you should also have an RDNS looking like something.somedomain.com.