Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
Websites on same c class IP address
-
If two websites are on the same c class IP address, what does it mean ?
Does two websites belong to the same company ?
-
But if you have 20 sites linking to you, and they're all from the same Class C IP address, and those are pretty much your ONLY links, that looks a bit fishy to the search engines. It's a signal to the search engines that "hey, this person can only get links from sites that have a high probability of the same person being in control of all of the sites".
That's why you'll see people talk about linkbuilding and wanting to do so from different Class C IP addresses.
-
Not necessarily. f you see different C blocks, you are usually talking about two different webhosts. So there is a chance that different sites from one owner are hosted in one C-block.
Even an IP-address is not always used for one company. You can have your own IP-address which leads to your website. But providers can also share an IP-address for different domains/ websites for different companies.
To find if website belong tot the same owner you need to check te registars database or tools like allwhois.com.
-
Thanks Olaf.
So, does it mean that sites hosted on same C class IP belong to one owner ?
-
A "C" Block address is based on your IP address.
For example 190.245.111.001 is a standard IP address. The c-blocks in this case are: AAA.BBB.CCC.001-254
So these are within the same C-class:
190.245.111.001
190.245.111.230And these are different C-Class IP's:
190.245.111.001
190.245.222.001Google may assume that sites hosted in differnet C-blocks are more likely to be from different people.
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Why Google de-rank a website.
Hi, I was inspecting a website which is covering the topic of best wheelbarrow of 2021, it is a new website and and starts ranking on google. But, after few days it got de-rank automatically and Moz is also not showing any result to that. I was wandering why this just happened and what should I do if I made my website and will not face this kind of situation?
Technical SEO | | Moeen22330 -
Two websites, one company, one physical address - how to make the best of it in terms of local visibility?
Hello! I have one company which will be operating in two markets, printing and website design / development. I’m planning on building two websites, each for every market. But I’m a bit confused about how to optimize these websites locally. My thought is to use my physical address for one website (build citations, get listed in directories, etc. ) and PO Box for another. Do you think there is a better idea?
Technical SEO | | VELV1 -
Product meta tags are not updating in my Magneto website!
I need some help! For some reason, each time I update the product meta tags in my Magento website, it doesn't change on the current website? Could someone help me understand why that is?
Technical SEO | | One2OneDigital0 -
Reverse IP Lookup
I have a client that has over 90,000 incoming links from a single IP address. I can't figure out who's linking to them. I've used several different reverse IP lookup tools and can tell that the server is in Europe and ISP is AT&T Global Network Services Nederland B.V.. (http://www.ip-adress.com/reverse_ip/194.196.0.36) Says there's 0 hosts on that IP. Any suggestions?
Technical SEO | | DonnaDuncan0 -
How to Remove a website from your Bing Webmaster Tools account
I have a site in Bing Webmaster Tools that I no longer work on. I can't seem to find where to delete this website from my webmaster tools account. Anyone know how (there doesn't seem to be anything obvious under Bing Help or on a Google Search).
Technical SEO | | TopFloor0 -
How much will changing IP addresses impact SEO?
So my company is upgrading its Internet bandwidth. However, apparently the vendor has said that part of the upgrade will involve changing our IP address. I've found two links that indicate some care needs to be taken to make sure our SEO isn't harmed: http://followmattcutts.com/2011/07/21/protect-your-seo-when-changing-ip-address-and-server/ http://www.v7n.com/forums/google-forum/275513-changing-ip-affect-seo.html Assuming we don't use an IP address that has been blacklisted by Google for spamming or other black hat tactics, how problematic is it? (Note: The site hasn't really been aggressively optimized yet - I started with the company less than two weeks ago, and just barely got FTP and CMS access yesterday - so honestly I'm not too worried about really messing up the site's optimization, since there isn't a lot to really break.)
Technical SEO | | ufmedia0 -
Multiple Domains, Same IP address, redirecting to preferred domain (301) -site is still indexed under wrong domains
Due to acquisitions over time and the merging of many microsites into one major site, we currently have 20+ TLD's pointing to the same IP address as our "preferred domain:" for our consolidated website http://goo.gl/gH33w. They are all set up as 301 redirects on apache - including both the www and non www versions. When we launched this consolidated website, (April 2010) we accidentally left the settings of our site open to accept any of our domains on the same IP. This was later fixed but unfortunately Google indexed our site under multiple of these URL's (ignoring the redirects) using the same content from our main website but swapping out the domain. We added some additional redirects on apache to redirect these individual pages pages indexed under the wrong domain to the same page under our main domain http://goo.gl/gH33w. This seemed to help resolve the issue and moved hundreds of pages off the index. However, in December of 2010 we made significant changes in our external dns for our ip addresses and now since December, we see pages indexed under these redirecting domains on the rise again. If you do a search query of : site:laboratoryid.com you will see a few hundred examples of pages indexed under the wrong domain. When you click on the link, it does redirect to the same page but under the preferred domain. So the redirect is working and has been confirmed as 301. But for some reason Google continues to crawl our site and index under this incorrect domains. Why is this? Is there a setting we are missing? These domain level and page level redirects should be decreasing the pages being indexed under the wrong domain but it appears it is doing the reverse. All of these old domains currently point to our production IP address where are preferred domain is also pointing. Could this be the issue? None of the pages indexed today are from the old version of these sites. They only seem to be the new content from the new site but not under the preferred domain. Any insight would be much appreciated because we have tried many things without success to get this resolved.
Technical SEO | | sboelter0 -
Why google index my IP URL
hi guys, a question please. if site:112.65.247.14 , you can see google index our website IP address, this could duplicate with our darwinmarketing.com content pages. i am not quite sure why google index my IP pages while index domain pages, i understand this could because of backlink, internal link and etc, but i don't see obvious issues there, also i have submit request to google team to remove ip address index, but seems no luck. Please do you have any other suggestion on this? i was trying to do change of address setting in Google Webmaster Tools, but didn't allow as it said "Restricted to root level domains only", any ideas? Thank you! boson
Technical SEO | | DarwinChinaSEO0