Links from same Class-C IP address

Google Algorithm Ranking Factors

(Number 90 of the 200)


Author: Dr. Manus Ward │Head of Digital Strategy and Data Protection │ is a qualified and experienced former hotel manager, culinary Olympic team manager and hospitality Head of School who is passionate about passing on the knowledge he gained from one of the few hotel digital strategy doctorates in the world to you the hotelier. Bonus: If you have any problems with this contact me (100% free) at or 086 8185829 on this or any aspect of your hotel’s digital strategy.

Why do we need to do this

Links from the same Class-C address look like fake links and you may have your search rankings reduced by Google.

What does this mean

An IP address is a unique string of numbers that identifies each computer. An example of an IP address is These have A, B, C and D blocks i.e. AAA.BBB.CCC.DDD. An identical class C address means that they have the same AAA.BBB.CCC PART of their IP address. An example of two identical Class C address would be and Class C addresses will be on the same network and limited to 254 nodes. Google believes that if a hotel site has the vast majority of their addresses coming from the same network it looks like they have purchased fake links and their links will be significantly devalued.

What do I do: If you haven’t purchased links you won’t have a problem. But if you want to double check click on and do the following:

This site will only list 300 IP addresses but 300 is a very good sample and will be very representative of your links. In this case the IP addresses are very different so there is no need to look any further. If you feel the need to double check, click on and do the following:

This will tell you if you have any problems. Email me at if you have allot of identical Class-C addresses. You may have a Google penalty that needs fixing.

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