build blogs across a few different Class-C IP Addresses???

12 replies
What does the following mean? how would you do this? (referring to the few different Class C IP Addresses)

"build a network of blogs across a few different
Class-C IP Addresses."

Does this simply mean to build one blog at your own computer (unique IP) and then build another blog from your work computer (different IP)?
#addresses #blogs #build #classc #ip addresses
  • Profile picture of the author Jason Gazaway
    All it really means is different IP addresses (server based).

    Host an account at several different hosts and you'll achieve this
    or host all sites under one host and buy different IP addresses and
    attach each unique IP address to each site.

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    • Profile picture of the author greg218
      whats a host that you would recommend? Someone recommended to me

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  • Profile picture of the author Jason Gazaway
    Personally, I've only used hostgator or wiredtree other than
    having my own servers.

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  • Profile picture of the author greg218
    Alright Thanks Jason!

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    • Profile picture of the author NewBeing
      Jason, the add-on IP addresses you can get at Hostgator for an extra $2, are they seen by the search engines as different IP addresses thus making it good for SEO?
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      • Profile picture of the author scorpio9
        HI Gregg
        Here is an example of 2 different Class-C IP Addresses; &
        The 200 and is what make them different C class, does not matter about the other set of numbers, 200 and 201 is the C Class in these 2 addresses.

        Some providers will give you different IP's such as &, even though 3 sets of these numbers are different they are still the same C Class. Make sure you ask your potential provider "how many C class IP they can provide" before you sign up.

        C Class or, "SEO Hosting" as it is called, can be more expensive than your standard shared hosting, and you could get several cheap shared hosting accounts from different providers for the same/better effect

        The only reason you would need different C class IP's is because you want to interlink the sites/blogs and give the impression to the search engines that they are completely random sites, if you are not going to do that you won't need different C class IP

        To be really effective though you should also consider using use different nameservers for the domains. If you Google for seo hosting you will find many providers

        Recommended hosting - depends on what your budget, webmastering abilities and your web building ambitions are. Join the forum you will find many providers and deals there plus lots of help and advice

        BeaconSites - Websites Designed For Lead Generation & Conversions
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        • Profile picture of the author greg218

          Something you might want to find out....

          Just talked with Lunarpages and they mentioned that if you are on the shared server (cheaper plan) you can only have 1 IP, even though they say they have the option of an addon IP for $2.95 per month. So might want to check that out before you sign up.

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  • Profile picture of the author bgmacaw
    This has become less important to Google if you're hosting with one of the major hosting companies where there are 1000's of domains on the same class C thanks to advanced server clustering. Given the numbers involved having a small number (less than 50 or so) interlinked won't make any difference to Google in most cases. However, Yahoo and MSN Live do seem to take Class C into account like Google did 6 years or so ago.
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    • Profile picture of the author Eldon Beard
      To make using different Class-C IP addresses work for getting SEO benefits from cross linking multiple sites, wouldn't you need to have private registration on all your domains?

      Seems like Google could easily access public registrations if they wanted to detect cross linking for SEO.
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  • Profile picture of the author Andyhenry
    I wrote about this recently here: Multiple Class C Hosting | Midas Marketing - Success Tips For Marketers

    In reality - there is no such thing as 'class c'.

    This is a misconception based on very old IP classifications.

    About 10 years ago we went over to CIDR (classless Inter Domain Routing) and the class system stopped.

    It was originally started when we were so naive that we thought the IP addresses wouldn't run out - now we know better.

    The theory of all this in relation to hosting is that the search engines are too clever for us to fool by putting different sites on one host and linking them for SERPS juice, so if you put them on different IP addresses they won't realise they're all yours and will give you credit for the links.

    The 'class' bit goes back to the old days when different companies all had groups of IP addresses, so in general a different class of IP should mean it's a different company.

    The other incorrect information about this is that the 3rd number is what defines it as Class C - That's incorrect too.

    The ONLY thing that governs the class is the first number - 1-126 is Class A, 129-191 is Class B, 192-223 is Class C, and 224-239 is Class D (Multicasting). (the missing ones are reserved for special uses)

    The reason people talk about Class C being the 3rd number is because of a thing called subnet masks. These are what decides which numbers are identifying your network and which ones your computers on that network.

    If you setup a PC and put the first digit of your IP address as between 192 and 223 - it will apply a default subnet mask of - This means the last numbers all identify computers - Thus if the 3rd number is different it must belong to a different network.

    In the case of SEO people are assuming that this difference will translate into Google (or other search engines) not realising it's your site.

    This is also why ebeard mentioned public registrations - Google could easily see that you registered both sites whatever IP addresses they're on.

    So in short - it's a techy thing which some of us do just to make sure that the search engines that aren't there yet give us some extra love.

    Eventually it won't make any difference as the search engines get better at checking this stuff, and in reality it's not worth worrying about for most people anyway, so don't get too sucked into it.


    nothing to see here.

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  • Profile picture of the author Andyhenry
    If you use a different host you'll almost certainly get a different IP not near your existing ones, but some hosts have more flexibility for this type of thing so just look around.

    Unless you're building lots of sites don't worry about it.

    nothing to see here.

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  • Profile picture of the author rondo
    There's a few of these "seo" hosts around but you may find it to be more cost effective to buy a few cheap hosting accounts with different providers and then you can do some 3 way linking between the sites.

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