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.
Backlinks from subdomain, can it hurt ranking?
-
I just started doing an SEO audit and noticed I have 40,000 some odd back links from an OLD version of our site that has been moved to a subdomain. The back links are for articles that already exist on our main site. I don't think Google is picking it up as duplicate content because that site isn't being crawled anymore. Could this hurt us SEO wise? I plan on removing the site, but how long after it's been removed should those back links disappear?
-
So there were no external links pointing to the subdomain admin.site.com ? If that's the case you could probably just noindex/nofollow the thing or let it 404. You could write an .htaccess rule to rewrite the domain name, but it's actually probably not worth it now that I think about it. The exception, of course, is if the subdomain had external links pointed to it.
-
Hi there,
Thanks for your reply. I'm not sure how feasible it is to redirect all of those urls. I know I could use regex but I just terminated the server that admin.site.com lived on so I can't access a robots.txt file anymore. Could I simply do a generic redirect admin.site.com -> site.com?
The subdomain was the same site and domain.
Thanks.
-
Okay, so the situation here is a little unclear, but the solution should be pretty straightforward.
If the admin.site.com was different from the original site domain, simply noindex/nofollow all of the pages on that domain. I recommend this over a robots.txt rule because it will actually remove them from the index. You can add a disallow all rule in robots.txt later once the site is completely noindexed.
If the admin.site.com was the same domain, I'd recommend redirecting all of those pages to the new URLs again and then launching a noindex/nofollow version blocked with robots.txt, though I'm not sure why it needs to exist for reference. If the subdomain was different from the old site you could also probably just noindex/nofollow all of it without the redirect. It's not best practice, but it's not that big a deal.
Hope this helps to answer.
-
If you took website down, you don't have to really do anything. Go to search console, do fetch as google on old admin subdomain, so google understands that it's not there anymore, and then just wait. Google will take those backlinks down.
-
The other thing I should note is that these site links do not show in Google when searching for the topic. I'm only seeing reported back links because the admin.site.com subdomain was blocked from Google crawling it for search results. Not sure if that makes a difference.
-
It says I can only demote 100 links, I need to demote upwards of 40,000 since the admin.site.com basically mirrored the actual site.
Now I'm a little confused.
I took the old site down, so I can use a robots.txt file there anymore.
So how can I disallow the entire admin subdomain and stop reporting back links?
-
I see. Read my response below and just use meta robots. it will help you out.
If you want to deindex those backlinks, you also can look into Google Search Console's demoting tool, but i don't think it's necessary.
-
Don't do that, disallow in robots.txt will NOT resolve indexing issue! What you need to use is meta robots. Noindex, nofollow. Watch this WBF on this subject:
-
Thanks
-
Hi there. Thanks for your response.
The pages exist on the new site, but the subdomain should have never been indexed. I noticed the back links in Google Console initially then confirmed with SEO Power Suite.
Basically we had site.com, then created a brand new site and migrated content over to newsite.com with 301 redirects from the old site. Then we wanted to keep the old site up for reference so we put it at admin.site.com. That is where all the 40,000 back links were coming from, admin.site.com, the old site.
There is no reason for us to redirect admin.site.com since the original articles were properly redirected. I guess however some how when the old site was taken down, Google must have indexed it still at the subdomain and counted those as backlinks.
-
Just make sure you add a robots.txt to the subdomain with
User-agent: * Disallow: / Or if the old site is not needed anymore, redirect the subdomain to your main domain and remove the site.
-
Hi there.
So, all the pages, from which those backlinks are coming from are non-existent anymore? have they been redirected? do they return 404s? Also, how did you find them? in Google Search Console or another tool?
So, if you found it in Google Search Console, and the original pages indeed have been removed and properly redirected, then it's just time delay by GSC. Otherwise (if those pages are crawlable), you should fix it.
Hope this makes sense.
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
-
Backlinks on Moz not on Google Search Console
Moz is showing thousands of backlinks to my site that are not showing up on Google Search Console - which is good because those links were created by some spammer in Pakistan somewhere. I haven't yet submitted a disavow report to Google of well over 10K links because the list keeps growing every day with new backlinks that have been rerouted to a 404 page. I have asked Google to clarify and they put my question on their forum for an answer, which I'm still waiting for - so I thought I'd try my luck here. My question... If Moz does not match Google Search Console, and backlinks are important to results, how valid is the ranking that Moz creates to let me know how I'm doing in this competition and if I'm improving or not. If the goal is to get Google to pay attention and I use Moz to help me figure out how to do this, how can I do that if the backlink information isn't the same - by literally over 10 000 backlinks created by some spammer doing odd things... They've included the url from their deleted profile on my site with 100s of other urls, including Moz.com and are posting them everywhere with their preferred anchor text. Moz ranking considers the thousands of spam backlinks I can't get rid of and Google ignores them or disavows them. So isn't the rankings, data, and graphs apples and bananas? How can I know what my site's strength really is and if I'm improving or not if the data doesn't match? Complete SEO Novice Shannon Peel
Link Building | | MarketAPeel
Brand Storyteller
MarketAPeel0 -
Why my website is not getting rank?
I can understand my website age is a big issue but now I want you to help me. I have been doing guest posts for increasing the domain authority but no good result. I just want you to let me what should I do next? AmazeInvent
Link Building | | alexmurphy11220 -
Need advice: How to replace a high-ranking pdf with a landing page -- without dropping much in rank?
Hi! We have a pdf of a white paper on our site that ranks #1 for a niche term. We are now exploring the idea of building a landing page for this paper with an overview (2-3 paragraphs) and a registration form for interested parties to fill out in order to access the paper. Do you think there'd be any hope of ensuring the new landing page would rank almost as well eventually (top 3)? I'm thinking a key consideration would be preserving the link juice from the existing links that are coming into the pdf, and that 301 redirecting the pdf URL to the new landing page URL could help with that. Am I right? Or would it be better to try to reach out to the linking sites and ask them to update their links (seems daunting). Any advice/opinions on this situation would be appreciated. (If folks think that there would be a significant risk of permanently dropping out of the top 5 by attempting this, we would likely choose to leave the pdf ungated as is.) Thanks!! -John
Link Building | | jomosi0 -
Spammy no follow backlinks - what should I do?
There is a individual/company that is creating lots of spam sites in my niche. It doesn't seem that they are trying to rank for any keywords, so I'm a little confused as to their purpose, but here's what they're doing. They scrape the top 10 Google results for each keyword and create a page - so if the niche is "widgets", they scrape the top 10 ranked sites for 'widgets', 'blue widgets', 'red widgets', and so on. A 'results' page is created for each keyword, which is linked from a home page. The results page always contains 10 websites - text is the site metadescription or similar. Each website gets a nofollow link back with the page title used as the anchor text. The host sites all have the keyword in the domain name - e.g www.widgetsxyz.com. The sites are thrown together but interestingly have a very crappy but individual logo (like 90's clipart). The host sites all have high DA/PA due to some very extensive link spam pointing to the sites, with very targeted keywords. There is seemingly no purpose to these sites that I can see - no other 'followed' links on the page or site. Whoever is doing this is churning out tens, if not hundreds of these sites. Any ideas what might be going on here, and whether I should be disavowing these sites (even though no follow). The fear is that they could switch the links to do follow, and get all the major players penalised in one fell swoop. ???
Link Building | | johnohara0 -
Get backlinks to Http or Https?
Hello, My website using SSL . My root domain : example.com is permanent 301 redirect to https://example.com via .htaaccess Question : 1 - If i want get backlinks from other websites is backlinks should point my https domain or non https domain. Is there any difference for ranking? 2 - if someone give backlinks to my non https domain Is there any value for https for ranking? 3 - Before i begin use SSL , backlinks in the past which i get for ** Http**, Is there a value for https ? Thank you, Sorry for bad English
Link Building | | livecam0 -
NoFollow & Directory Scraper Backlinks
I was wondering how important it was to remove/disavow: NoFollow backlinks - many ("buy viagra" etc). Directory backlinks - many questionable/generic directories. Obviously the focus is the equity passing links but both of the above constitute a significant proportion of backlinks to the site - I've seen that "scrapers" are seen as natural and obviously NoFollow do not pass link juice - but does the sheer number have a bearing and therefore make them equally important to address? Thanks in advance for your responses. Regards
Link Building | | National-Homebuyers0 -
Backlinks from non-relevant site
There's a forum I used to participate in that allows you to include a link to your website in your signature block. I have over 500 posts in the forum so that provides a lot of backlinks to my website. However, I recently decided to remove my website link from my signature for two reasons: The forum is 95-99% dead. Hardly anyone uses it anymore. BTW, the website that houses the forum is still popular within is niche (articles, etc). Just the forum appears to be dead. The website and its forum really have no connection whatsoever to my business. I'm in a completely different niche. However, I have no idea if I've made the right decision. Will removing my signature and the backlinks hurt my site? Or will it help it since the other site really isn't related to mine? Thanks for any thoughts on this!
Link Building | | emh19690 -
URL shortener and backlinks
Are there any SEO benefits drawn from creating backlinks with Google url shortener service(especially for the very deep links) or for the do-follow link juice I have to use a complete address?
Link Building | | SirMax0