It was suggested that I start my own thread, to make it easy to find the info that I have posted over a few threads, which burst the SEO Hosting bubble. In doing so, it will save a lot of people: time, money and effort. I won't be covering any new info, just copying my existing posts as quotes and arranging them in a logical order. Although one thread that I contributed to is no longer available, so I'll have to cover the missing info here. If you want to see some of the original posts, take a look at the following threads (which are still avaiable): Let's begin... SEO hosting is sold as the magic bullet for all your SEO issues. The idea is valid, but no one offering SEO Hosting - actually implements what they say (but I'll show you, how to do it yourself). Lets start off with the basis of the whole SEO hosting sales pitch - Class C IP addresses. The IP address classes are defined as follows: Little note for the quote below: The first set of numbers under the class name is: starting IP address, after the "=" is the binary long form. The second line is the: ending IP address, followed by the binary long form, after the "=". The third line shows you how the IP addresses in that class are used. For those who cant make heads or tails out of the above - the key is the moving: 0 - see below: Below I cover when Classful addressing stopped being used - when they stopped handing out IP addresses based on class. The Important bit is in blue: I once came across a seo hosting company once that described Class C IP addresses as being defined as the 3rd octet. In the Class quote at the beginning, you?ll see the numbers are grouped and separated by dots. Each groping is called an octet (it?s to do with the binary bits, as it?s 8 bits that are used). Example: [1st octet].[2nd octet].[3rd octet].[4th octet] The square brackets used above, are used to make it easier to make out the dots in the example. The SEO hosting company, claimed right on the front page of their website, that Class C IP addresses were defined by the 3rd octet. Their thinking was as follows: [Class A].[Class B].[Class C].[Class D] As I have shown, all the classes are defined in the first octet. More still to come, so please refrain from posting until I have finished. If you need to know how to do it properly - take a look at the links I provided at the top of this post.