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.
Why some domains and sub-domains have same DA, but some others don't?
-
Hi
I noticed for some blog providers in my country, which provide a sub-domian address for their blogs. the sub-domain authority is exactly as the main domain. Whereas, for some other blog providers every subdomain has its different and lower authority.
for example "ffff.blog.ir" and "blog.ir" both have domain authority of 60. It noteworthy to mention that the "ffff.blog.ir" does not even exist!
This is while mihanblog.com and hfilm.mihanblog.com has diffrent page authority.
-
Hey!
DA scores are specific to the root domain, we are not taking into account a subdomain. So even if you search a subdomain that doesn't exist (ffff.blog.ir), DA score is still only relevant to the root domain (blog.ir) which does exist.
Page Authority on the other hand is specific to the exact page you are searching, so it makes sense that mihanblog.com and hfilm.mihanblog.com would have different page authority scores are they are separate pages.
Hope that helps, let me know if you have further questions.
-
Am pretty sure that Moz just unifies DA stats in some circumstances when they have no 'actual' data for the subdomain in question. Sites which are very important, which have a number of sub-domains (but not hundreds or thousands) often render different results for DA metrics. For some blog platforms (blogger is a good example, also "blogname.wordpress.com" WordPress hosted blogs) - they have thousands or hundreds of thousands of sub-domains and Moz can't index all of them
In these situations, if Moz comes across a subdomain which is well-linked across the web it will separate it out and ascribe unique values. For the rest (of which Moz holds no data), it probably just unifies the DA metric with the root domain
It's a symptom of an incomplete index of the web. That being said, no one has a complete index of the web - you have to work with what you got
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
-
Using a Reverse Proxy and 301 redirect to appear Sub Domain as Sub Directory - what are the SEO Risks?
We’re in process to move WordPress blog URLs from subdomains to sub-directory. We aren’t moving blog physically, but using reverse proxy and 301 redirection to do this. Blog subdomain URL is https://blog.example.com/ and destination sub-directory URL is https://www.example.com/blog/ Our main website is e-commerce marketplace which is YMYL site. This is on Windows server. Due to technical reasons, we can’t physically move our WordPress blog to the main website. Following is our Technical Setup Setup a reverse proxy at https://www.example.com/blog/ pointing to https://blog.example.com/ Use a 301 redirection from https://blog.example.com/ to https://www.example.com/blog/ with an exception if a traffic is coming from main WWW domain then it won’t redirect. Thus, we can eliminate infinite loop. Change all absolute URLs to relative URLs on blog Change the sitemap URL from https://blog.example.com/sitemap.xml to https://www.example.com/blog/sitemap.xml and update all URLs mentioned within the sitemap. SEO Risk Evaluation We have individual GA Tracking ID and individual Google Search Console Properties for main website and blog. We will not merge them. Keep them separate as they are. Keeping this in mind, I am evaluating SEO Risks factors Right now when we receive traffic from main website to blog (or vice versa) then it is considered as referral traffic and new cookies are set for Google Analytics. What’s going to happen when its on the same domain? Which type of settings change should I do in Blog’s Google Search Console? (A). Do I need to request “Change of Address” in the Blog’s search console property? (B). Should I re-submit the sitemap? Do I need to re-submit the blog sitemap from the https://www.example.com/ Google Search Console Property? Main website is e-commerce marketplace which is YMYL website, and blog is all about content. So does that impact SEO? Will this dilute SEO link juice or impact on the main website ranking because following are the key SEO Metrices. (A). Main website’s Avg Session Duration is about 10 minutes and bounce rate is around 30% (B). Blog’s Avg Session Duration is 33 seconds and bounce rate is over 92%
Intermediate & Advanced SEO | | joshibhargav_200 -
Does redirecting from a "bad" domain "infect" the new domain?
Hi all, So a complicated question that requires a little background. I bought unseenjapan.com to serve as a legitimate news site about a year ago. Social media and content growth has been good. Unfortunately, one thing I didn't realize when I bought this domain was that it used to be a porn site. I've managed to muck out some of the damage already - primarily, I got major vendors like Macafee and OpenDNS to remove the "porn" categorization, which has unblocked the site at most schools & locations w/ public wifi. The sticky bit, however, is Google. Google has the domain filtered under SafeSearch, which means we're losing - and will continue to lose - a ton of organic traffic. I'm trying to figure out how to deal with this, and appeal the decision. Unfortunately, Google's Reconsideration Request form currently doesn't work unless your site has an existing manual action against it (mine does not). I've also heard such requests, even if I did figure out how to make them, often just get ignored for months on end. Now, I have a back up plan. I've registered unseen-japan.com, and I could just move my domain over to the new domain if I can't get this issue resolved. It would allow me to be on a domain with a clean history while not having to change my brand. But if I do that, and I set up 301 redirects from the former domain, will it simply cause the new domain to be perceived as an "adult" domain by Google? I.e., will the former URL's bad reputation carry over to the new one? I haven't made a decision one way or the other yet, so any insights are appreciated.
Intermediate & Advanced SEO | | gaiaslastlaugh0 -
Cleaning up a Spammy Domain VS Starting Fresh with a New Domain
Hi- Can you give me your opinion please... if you look at murrayroofing.com and see the high SPAM score- and the fact that our domain has been put on some spammy sites over the years- Is it better and faster to place higher in google SERP if we create a fresh new domain? My theory is we will spin our wheels trying to get unlisted from alot of those spammy linking sites. And that it would be faster to see results using a fresh new domain rather than trying to clean up the current spammy doamin. Thanks in advance - You guys have been awesome!!
Intermediate & Advanced SEO | | murraycustomhomescom0 -
One of my Friend's website Domain Authority is Reducing? What could be the reason?
Hello Guys, One of my friend's website domain authority is decreasing since they have moved their domain from HTTP to https.
Intermediate & Advanced SEO | | Max_
There is another problem that his blog is on subfolder with HTTP.
So, can you guys please tell me how to fix this issue and also it's losing some of the rankings like 2-5 positions down. Here is website URL: myfitfuel.in/
here is the blog URL: myfitfuel.in/mffblog/0 -
Ranking 1st for a keyword - but when 's' is added to the end we are ranking on the second page
Hi everyone - hope you are well. I can't get my head around why we are ranking 1st for a specific keyword, but then when 's' is added to the end of the keyword - we are ranking on the second page. What could be the cause of this? I thought that Google would class both of the keywords the same, in this case, let's say the keyword was 'button'. We would be ranking 1st for 'button', but 'buttons' we are ranking on the second page. Any ideas? - I appreciate every comment.
Intermediate & Advanced SEO | | Brett-S0 -
Legacy domains
Hi all, A couple of years ago we amalgamated five separate domains into one, and set up 301 redirects from all the pages on the old domains to their equivalent pages on the new site. We were a bit tardy in using the "change of address" tool in Search Console, but that was done nearly 8 months ago now as well. Two years after implementing all the redirects, the old domains still have significant authority (DAs of between 20-35) and some strong inbound links. I expected to see the DA of the legacy domains taper off during this period and (hopefully!) the DA of the new domain increase. The latter has happened, although not as much as I'd hoped, but the DA of the legacy domains is more or less as good as it ever was? Google is still indexing a handful of links from the legacy sites, strangely even when it is picking up the redirects correctly. So, for example, if you do a site:legacydomain1.com query, it will give a list of results which includes pages where it shows the title and snippet of the page on newdomain.com, but the link is to the page on legacydomain1.com. What has prompted me to finally try and resolve this is that the server which hosted the original 5 domains is now due to be decommissioned which obviously means the 301 redirects for the original pages will no longer be served. I can set up web forwarding for each of the legacy domains at the hosting level, but to maintain the page-by-page redirects I'd have to actually host the websites somewhere. I'd like to know the best way forward both in terms of the redirect issue, and also in terms of the indexing of the legacy domains? Many thanks, Dan
Intermediate & Advanced SEO | | clarkovitch0 -
I'm a newb, built a website with Wix want to redirect it to a domain I own, but am reading that Wix is bad for this
Hi, I am building this site for my boss http://charlesfridmanpr.wix.com/real-estate and am still working on it. I'm getting close to the stage where I want to redirect it to the URL we want to use, but in reading these forums, it says that because all of subpages (?) have a # in them, they will not be read or indexed by google. I am very new to this, and while it may not look like it, the website has taken me quite a while to design. Is there a way to fix this? We want to appear high up for a non competitive keyword. Thanks
Intermediate & Advanced SEO | | Charlesfridmanpr0 -
Why Google isn't indexing my images?
Hello, on my fairly new website Worthminer.com I am noticing that Google is not indexing images from my sitemap. Already 560 images submitted and Google indexed only 3 of them. Altough there is more images indexed they are not indexing any new images, and I have no idea why. Posts, categories and other urls are indexing just fine, but images not. I am using Wordpress and for sitemaps Wordpress SEO by yoast. Am I missing something here? Why Google won't index my images? Thanks, I appreciate any help, David xv1GtwK.jpg
Intermediate & Advanced SEO | | Worthminer1