What is a Class C Subnet and why should I care?
-
So I did a site analysis over at Majestic SEO and it told me that I have 100 Referring IP addresses and 92 are Class C subnets. What does this mean? Are they good, bad or irrelevant?
-
Pretty much all hosting companies offer dedicated ips but they are likely to be of the same class C subnet as ips are bought in blocks.
-
Any good hosting companies out there that help with offering the option to have each domain hosted on a different IP? I have only seen http://www.seohosting.com/ by host gator (I think).
-
I feel that the IP of links is a fairly low ranking factor. But if all of your links were coming from the same IP then your site would be throwing up some red flags.
-
I agree with this. The closer the IP addresses between sites that link to each other the more likely they are that the two sites have a relationship. Not that this is bad, it's just that links that you get from your relationships are usually easier to get than those that are freely and naturally given, so they discount them.
-
Class C refers to the third set of numbers in an IP.
AAA.BBB.CCC.DDDIf all the links came from the same C subnet, they're 'likely' less trusted.
The 'theory' (calling it a theory because i don't think its ever really been proven) is that multiple links from the same C subnet are less valuable because its likely that they come from an owner of multiple websites.
I wouldn't label them as 'bad'
But if you're link building, it's probably a good idea to get links from different subnets
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
-
SEO advice on ecommerce url structure where categories contain "/c/"
Hi! We use Hybris as plattform and I would like input on which url to choose. We must keep "/c/" before the actual category. c stands for category. I.e. this current url format will be shortened and cleaned:
Technical SEO | | hampgunn
https://www.granngarden.se/Sortiment/Husdjur/Hund/Hundfoder-%26-Hundmat/c/hundfoder To either: a.
https://www.granngarden.se/husdjur/hund/hundfoder/c/hundfoder b.
https://www.granngarden.se/husdjur/hund/c/hundfoder (hundfoder means dogfood) The question is whether we should keep the duplicated category name (hundfoder) before the "/c/" or not. Will there be SEO disadvantages by removing the duplicate "hundfoder" before the "/c/"? I prefer the shorter version ofc, but do not want to jeopardize any SEO rankings or send confusing signals to search engines or customers due to the "/c/" breaking up the url breadcrumb. What do you guys say and prefer from the above alternatives? Thanks /Hampus0 -
Similar Websites, Same C Block: Can I Get a Penalty?
One of my website has been heavily hit by Google's entire zoo so I decided to phase it out while building a new one. Old website: www.thewebhostinghero.com
Technical SEO | | sbrault74
New website: www.webhostinghero.com Now the thing is that both websites are obviously similar since I kept the branding. They also both have content about the same topics. No content has been copied or spinned or whatever though. Everything's original on both websites. There were only 3 parts of both websites that were too similar in terms of functionalities so I "noindexed" it on the old website. Now it seems that Google doesn't want you to have multiple websites for the same business just for the sake of occupying more space in the search results. This can especially be detected by the websites' C block. I am not sure if this is myth or fact though. So do you think I'm in a problematic situation with this scenario? It's getting ridiculous all you have to watch for when building a website, I'm afraid to touch my keyboard in fear my websites will get penalized! Sorry for my english btw.0 -
Linking domains on the same C Block together
Hey, I have an online store selling dj equipment, sound & light products such as speakers, lasers, decks, pa systems, karaoke systems etc. I just bought a new domain but I registered it under a different name and address (my personal details). And I plan on hosting the website on a seperate server so it has no connection with my eCommerce store. The main purpose of the website will be to review the products I sell, write detailed how to guides for DJ's, party planners, mobile DJ's etc. There will be links on the current ecommerce website (which currently gets around anything from 500 to 1000 unique hits a day) going to the new blog website. But would I be better off keeping it on the same C Block even though they are going to be two very different websites and the blog may not always necessarily be about the products on my ecommerce website and may be products on say eBay, Amazon, etc. (In otherwords, it's going to be it's own website with an unbiased opinion, but the ecommerce site will be linking to it on certain products that are reviewed on there). Any help is appreciated 🙂
Technical SEO | | tomhall900 -
How big an impact, if any, does distinct IP subnet have?
I have two customers that sell the same product. Their content is logically similar because they are selling nearly the same thing. The part numbers, descriptions, code base and underlying structure are different however. One customer is complaining that because I host both of these sites in the same server cluster on the same subnet I am negatively affecting their ranking. To what extent might this be true? I've always held that unless the content is identical the subnet thing was just a myth. Any opinions?
Technical SEO | | ChrisInColorado0 -
Anchor text with class atttribute followed by search engines?
Hi folks, Is an anchor containing a class attribute followed by the search engines? Viewed the "text only" version of the cached page in Google and the link is not listed so not sure if it is followed for indexing purposes The code: Reports Actually the link was recognized as an internal link using the SEOMOZ toolbar and also was listed as an internal link using A1 Analyzer. Any thoughts welcomed!! Finn
Technical SEO | | insite3600 -
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 -
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 ?
Technical SEO | | seoug_20050 -
Does Google care how you write internal links?
I am changing ecommerce platforms. For my internal linking on the old site there was a lot of old links written like this: http://www.domain.com/page-name But now i am writing links mostly like this: /page-name Will that make a difference to search engines? Is one easier than the other for them to interpret?
Technical SEO | | Hyrule0