Wednesday, August 8, 2012

What is a C-class IP and why should I care?

A computer’s IP address is it’s address on the Internet. A C-Class block of IPs are ones which are next to each other. Links from the same IP have very limited value. Links from the same C-Class IP block have a little more value but still not much. Links from different C-Class IPs are worth the most.

Not as important as it once was, especially when it comes to sites hosted on huge shared server clusters like those at HostGator/ThePlanet, BlueHost and others. The shortage of available IP addresses is driving this.

Most importantly tons of domains all on the same IP or C-Class that all interlink are the fastest way to announce to Google that you’re trying to cheat the system. This may have worked a couple of years ago, now it’s just a flashing neon sign telling Google to deindex you.

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