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
-
What Tools Should I Use To Investigate Damage to my website
I would like to know what tools I should use and how to investigate damage to my website in2town.co.uk I hired a person to do some work to my website but they damaged it. That person was on a freelance platform and was removed because of all the complaints made about them. They also put in backdoors on websites including mine and added content. I also had a second problem where my content was being stolen. My site always did well and had lots of keywords in the top five and ten, but now they are not even in the top 200. This happened in January and feb. When I write unique articles, they are not showing in Google and need to find what the problem is and how to fix it. Can anyone please help
Technical SEO | | blogwoman10 -
My website is constantly decreasing
For few weeks ago my website is constantly decreasing in search position. I lost keywords and is gooooing down.
Technical SEO | | Dan_Tala
Although it is well rated on several on page and off page seo verification software that I have tried.
I checked Google search console and Analytics and found no major problems. However… from one day to another it keeps going down.
I also checked what the main competitors are doing and they are not doing well, at all.
The main competitor actually has a creepy website. Totally devoid of onpage or offpage SEO but with an enormous number of backlinks. And of a very bad quality, which should disqualify it, still…
Few weeks ago I changed something.
In the pages I had H1, 4xH2, no H3 and an H4 without content.
An unnatural H tag structure.
Now I have H1, H2, H3, 3xH4, with the coherent information.
Theoretically, Google should have been “happy” or I’m missing something. I use a SAAS platform.
I just found out that they made changes to the keywords (tags).
I am selling toner cartridges for printers.
So…
The tags are printer models and generate a url in which they have the products.
Ex. https://www.sertit.ro/cartus-imprimanta-cilindru-color-hp-laserjet-pro-m-177fw goes to the products for that printer model.
The question is… should I make tag canonical?
Is it possible for products to loose so much in Google search?0 -
Website ranking declined after connecting to CDN
Hi! We are trying to rank https://windowmart.ca for various local search terms. Our head office is in Edmonton where we try to rank https://windowmart.ca/edmonton-windows-doors/ for such terms as "windows Edmonton", "replacement windows Edmonton", "windows and doors Edmonton" as well as others. The website was the leader in its niche for around 2 years. Then we've got some server related issues, moved to a new server and connected CDN Nitropack that really improved our google speed test results. Recently we noticed that our rankings started to drop. Do you know if Nitropack can negatively effect local SEO rankings? Thank you!
Technical SEO | | vaskrupp0 -
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 -
Advice on Linking to an Adult Related Website
I have a question regarding whether or not Google would penalize my main website for linking to a website that has adult content. The site I am linking to is not a porn site, rather it is a site that sells web site templates for adult related stores selling sexy toys, videos, etc. For example my site that is linking to the adult related website is here: http://www.websitetemplatedesign.com/ and the link to the site is in the footer at the bottom left which is an icon. And it links to http://www.adultsextemplates.com/ Im just looking for advice as to whether or not this could be a penalty or not. I did suffer major SERP loss in the last month and Im trying to find what I am doing that may have caused this. Any advice would be appreciated.
Technical SEO | | jmccommas0 -
Page with h1 and h1 class=
Hi, If a page in the source code has boht following elements: class="blogg_rubrik">TITLE OF THE PAGE Is that bad for SEO, since the first H1 is empty? Shouldn't a page use only one H1?
Technical SEO | | Ypsilon0 -
Sitemap for dynamic website with over 10,000 pages
If I have a website with thousands of products, is it a good idea to create a sitemap for this website for the search engines where you show maybe 250 products on a page so it makes it easy for the search engine to find the part and also puts that part closer to the home page? Seems like google likes pages that are the closest to the home page (less clicks the better)
Technical SEO | | roundbrix0 -
Why is my website banned?
IMy website is Costume Machine at www.costumemachine.com . My site has been banned for 1 year now. I have requested that google reconsider my site 3 times without luck. The site is dynamic and basically pulls in feeds from affiliate sites. We have added over 1,500 pages of original content. The site has been running great since 2008 without any penalties. I don't think I got hit with any linking penalty. I cleaned up all questionable links last November when the penalty hit. Am I being hit with a "thin" site penalty? If that is the issue what is the best way to fix the problem?
Technical SEO | | tadden0