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.
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
-
Backlink not index on MOZ
Hi All, help me... why backlink for https://gobiz.co.id/pusat-pengetahuan/aplikasi-kasir/ at https://aldhifajar.com/spots-aplikasi-kasir-simple-untuk-setiap-jenis-usaha/ not index at Moz? how it problem on web?
Link Building | | masirwin9180 -
Backlinking
I read the moz begainers guide and I am confuse over this point. " If i have too many back links from a single site. It's considered too spammy. " Q: I have a blog and it constantly black links to my ranking page, is this considered bad? Q: I have an active forum that I go to and I am constantly contributing to the topic however i will always try to relate back to my website, is this considered spammy too?
Link Building | | kevinbp0 -
How is this site ranked so high on Google?
How on earth does "southeastasiatravelblog.com" rank No 3 on Google for "Asian travel blog"? It's just a collection of basically PR type travel articles. I have profiled its backlinks using Open Site Explorer and 71% of them are dead. The rest seem to be mostly "run of site" links from his other websites, which aren't particularly travel or Asia related. The highest PA for a live backlink to this site is a link from within his own website (PA 27, DA 15). Most of his backlink anchors are URLs and look fairly EMD to me. The site has few shares (6 FB shares, 7 FB likes, 1 Twitter share). So what makes it rank so highly for this phrase? My site I'm comparing against is "travelnasia.com" which is a fairly new domain with a DA 23, PA 31 and about the same amount of shares but far fewer backlinks at this stage because I recently changed URLs to shake off what might have been an algorithm penalty from Google. I am now receiving a growing level of Google search traffic again, but it's a long climb back. I'm looking at strategies, which is why I was checking out the site above.
Link Building | | Gavin.Atkinson0 -
How to get BackLinks?
What is the best site to get backlinks ? Not for free, i mean a paid premium services . I think i need backlinks for the authority of my sites. My sites are indexed, but when i search for different keywords on google, i find them on page 5-7 . I need to see them on page 1-2 . But my site's authority is : 1 .
Link Building | | vende123450 -
Can I start SEO before finishing my website?
Hi, I'm new to SEO and websites. I'm slowly building a website at the moment. I was wondering if I could set up a blog at the domain name I will use for my final website and begin doing SEO. Eg. I set up a blog using a CMS like Squarespace and begin blogging at domain.com/blog (with links to the domain.com/blog from the domain.com home page) and inbound links point to the domain.com 'front page'. And then add the design of the 'front page' of the website using Squarespace at a later stage eg. domain.com. Is this a good idea? Will it work? I'm anxious to get started on SEO. Thanks!
Link Building | | doblstp0 -
How important are edu and gov backlinks?
I have heard that edu and gov backlinks are important but how so in a niche area like mine - real estate? Perhaps I am missing the point but I do not see how either type of site would ever backlink to a commercial real estate entity. If these are that important in theory, are they obtainable in practice?
Link Building | | casper4340 -
What to do with outdated (but ranking) content?
I'm SEOing for a theatre. We've got show pages that rank when searching for the business, but are outdated as the shows are from past years. The pages aren't accessible at all from the site now, but still exist in domain and are linked to by google. If you search the business, the results are: 1. [biz name] 2. [biz name] - tickets 3-6. outdated shows Should these pages be left up, or taken down and redirected home? Would there be any seo boost to the homepage from 301ing them home, or do you think it'd be more beneficial to have more results available as entry points into the site?
Link Building | | RyanWhitney150 -
Ranking for competitor brand terms
My client sells security software online. Our keyword research shows massive traffic for competitor brands relative to the non-branded terms and my guess is that this traffic converts well. I'd like to figure out a way to get some of that traffic for my client without crossing any ethical boundaries. The only thing I can think of is having a comparison page with good onsite optimization. Does anyone else have any tips on how to rank for these terms?
Link Building | | Riona0