What is a Separate C Class IP?
I’m not writing this as a purely promotional post for SEOHosting (at least not entirely). But I have seen a lot of confusion out there – especially among new website owners – about the difference between C Class IP web addresses, one of the major things offered by SEO Hosting. It’s core to optimizing a fleet of websites.
When I first started in the SEO biz, I was in the business of creating dummy sites that would all link to the same central website. This was early on in SEO when Google was not nearly as strict as it is today. Creating these ghost sister sites are considered a form of spam, a variant on a link farm. Even if the sites have original content, Google frowns on a series of sites all linking repeatedly to the same site – especially if those sites all exist on the same IP.
That last issue is the most important. Remember, Google spiders are vigilant, but not that bright. If the sister websites exist on different IP addresses, spiders will read these as coming from a totally different entity – i.e. it’s not a case of one webmaster trying to game the system, but separate webmasters who happen to just link to each other. A separate C class IP address, then, allows webmasters to create a fleet of websites that interlink without being red-flagged.
At least that’s the theory. Even if sites have similar IP addresses (a number off) Google will read these web addresses as related. So it’s not enough for two sites to have different IP addresses, the sites need to have unrelated IP addresses. If they don’t, creating two sites that have similar keyword structures and link to each other will most certainly cause the Google spiders to be suspicious. That’s what separates a service like SEO Hosting: separate C Class IP’s and separate nameservers.
Be Careful with Interlinking
That said, having sites on separate servers or IP addresses does not guarantee autonomy. You still need to be careful about too much interlinking between sites. Even if two sites are on separate sides of the world, it is going to raise flags if all those two sites do is link to each other. This is true both for specific articles and the site overall. You should not link to one site more than four times in a 400 word article. Now, say, you write an article a day with four links all going to the same portal – this will raise flags, bet on it.
Even if somehow these sister sites get through the filter, you still need to be careful. As with all blackish-hat tactics, there’s a limit to how long they can work. Google is always updating its terms and conditions (as is every other major search engine) and if there’s currently a way to beat the system, this may not be the case a few months down the line. In which case, this means going back into all your live sites and changing your linking strategy, which can be beyond time-consuming.
To avoid interlinking problems, you should link sporadically – pepper these links throughout the site. In short, make the links look organic. This should really be your modus operandi anyway:
- House links within relevant, useful content
- Link to quality websites
- Don’t overuse links
This should be the case whether you’re linking a site on your own C class network or some other site within your niche. The trouble is that people are so desperate for quality links that they overuse interlinking between sites and this can cause trouble. This is the case even if each C Class is on a separate nameserver. Basically, it comes down to the fact that interlinking should be no different than standard linking. Infrequent linking still has optimization and ranking power. Perhaps the traffic won’t be as great from the links themselves, but that should not be your priority, as most traffic comes from search engines, so search engine rank should be a much higher priority than link-generated traffic.
The Importance of Nameservers
One major thing that separates SEO Hosting from other service providers is the fact that each C Class IP is can also be used as a separate nameserver. Make no mistake, if you have one without the other, it is virtually useless: i.e. Multiple sites with different IP’s but using the same DNS accomplishes virtually nothing. So it is vital to have different nameservers. One alternative is to just open up a fleet of sites at a fleet of different web hosts. While this is possible, it’s also a lot more expensive, as all web hosts are cheaper when you buy in bulk. It’s also easier to log—in to one CMS to manage an account. The time spent managing a fleet of sites at different web hosts can be quite a headache.
Another important factor is Whois info. If each domain has the same Whois information, it will be a webmaster’s “tell,” even if the websites exist on different nameservers. Basically, you have to cover all your tracks to ensure that each websites appears as if it’s coming from a different entity. This includes separate IP address, separate servers, separate Whois info, and the style of linking on each site.
December 17th, 2008 at 1:12 am
very informative and useful info. Thanks. Google is a tricky beast indeed.
August 6th, 2009 at 9:37 pm
SEOHosting.com does not use seperate C class nameservers. They provide you with only one set of name servers.
For instance if you purchase lets say the 15 C Class IP’s hosting option you are given 15 C Class IP’s but only one set of nameservers. So basically it’s not really SEO hosting
August 9th, 2009 at 2:06 pm
@Jacob With SEO Hosting, you receive one set of name servers that we create for you, but if you’re only using that, you’re missing out.
You also can use over 50+ IP’s to create your own private name servers. So if you have a 15 C class plan, each account can have it’s own unique name servers.
E-mail me chad(at hostgator dot com) if you have any questions on how to set this up.
November 20th, 2009 at 2:42 am
This is the best explanation of C-class hosting I have found. But just to check that I understand it right, let's say I have a 5 C-class hosting account, and want to host (for example) 15 domains on it, I would split the 15 domains across the 5 cPanel accounts, with each cPanel account having it's own private nameservers? So sites 1-5 point to ns1.privatenameserver1.com, sites 6-10 point to ns1.privatenameserver2.com, and so on? And each nameserver/cPanel account is on it's own IP address, with 5 addon domains?
Graeme
February 9th, 2010 at 7:17 am
but someone else will end to have an IP on the same class. If you have
xx.yy.132.aa other person could have zz.xx.123.bb .
"Different C-class" created confusion for me at the beginning, then i realize that other might have the dedicated IP's on the same class
When i landed on this site i thought I can have a full C-Class block (managing D-Class).
August 14th, 2010 at 2:32 pm
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August 16th, 2010 at 1:53 pm
Your webpage is so instructive … preserve up the great operate!!?!!!
August 16th, 2010 at 2:10 pm
I’m frustrated with most of these article directories. I need all the article directories that quickly posts my articles.
October 27th, 2010 at 3:54 pm
Great article, really helped me figure out nameservers and ips.
November 13th, 2010 at 8:47 pm
besides this what about analytics and webmaster tools?
December 15th, 2010 at 2:49 am
What about if you have private registration? Or does this not matter? (because Google is a registrar too)
January 15th, 2011 at 4:33 am
Thanks for the advice on class C IP address. After learning of this I checked the IP addresses of all the inbound links for some of my sites and discovered that some of the directories I submitted to have the same C class. Knowing this I will be sure to submit to different directories in the future that have different C class IP addresses.
March 13th, 2011 at 11:54 pm
Now I have a bit of understanding upon this very advanced technique. Frankly speaking, I have not come across this C-class IP address before, and rather confused when reading about it. I have gained some interest in it as some pros recommended it, solely for the kick-ass results. Thank you so much for clarifying this matter…
March 19th, 2011 at 11:54 pm
hey Henry, that was really a great post. Understanding abt different IP classes was a confusing thing for me and now it seems like it's quite clear, after reading ur post.
ThankYou
April 19th, 2011 at 12:06 pm
Very Very informative post my friend. Thanks a lot for sharing this
May 31st, 2011 at 3:44 am
Get High Quality Backlink From Different C Class IP Addresses
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June 1st, 2011 at 11:54 am
This article appears to have been plagiarized:
seofortlauderdaleDOTcom/article/placing-separate-websites-on-different-c-class-ip-addresses
June 10th, 2011 at 12:38 am
Thanks a bunch for the clear information. I'd like to hear more about other safeguards, such as not using google toolbar, and google analytics.
June 19th, 2011 at 3:08 am
I guess I am still confused. I always thought that the first 3 numbers decided. So in the example below, these are in the same c class:
192.167.123.123
192.165.111.111
Notice how the first three numbers are the same in each? That was what I thought the same c class is? Is this wrong? A better question might be, what do I tell a sever company when I want the first three numbers to be different from one another?
September 19th, 2011 at 4:32 am
Really awesome article!
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