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
-
Tracking Backlinks
Hi there, I'm looking for a tool/ service whereby I can track backlinks & be alerted when:
Link Building | | jasongmcmahon
a) They've moved
b) They've been removed & 404 is generated Is anyone aware of any such service?0 -
Backlinks and SPAM
I was doing some back link review of competitors and I have noticed that many of our competition have 300+ do follow back links from Justia.com and an additional 300+ do follow links from law.cornell.edu (they share the same database). The links on Justia are from different pages and they are all going to the root of our competitors site. So the questions are as follows; 1: For the purpose of SEO is this considered SPAM 2: If not SPAM, then does it have a positive effect on the competitions website and should I attempt to emulate for my client. Thanks in advance. -Jeff
Link Building | | FriedmanSimon10000 -
Is it possible to get high page rank without backlinks?
Today while looking for expired domains i found many high pr domains, checked for fake pr found they are valid but there were zero backlinks pointing to them.Is this possible?
Link Building | | IndiaFPS1 -
Should i disavow all backlinks?
I am facing a decline in my website over the past 90 days Im wondering if this is due to the recent penguin update. Can someone please give me some guidance? heres my site: USDALoanagency.com
Link Building | | briananglin0 -
About to get my competition domain, how what I can do?
Hello, I'm trying to get a domain from what it used to be my main competition, if I get this domain can I forward the domain to my website? because they have good local ranking that I don't have and also a lot of links. I don't really want to use that brand name, I just want to take advantage of the links they already created if that possible. Or can I do something else with the domain or just buy it and keep it so nobody else can buy it? Thank you
Link Building | | jpgprinting0 -
Should we BackLink to Guest Post ?
Hi, I have been actively doing guest blogging for last few weeks . But the page authority , moz Rank and moz Trust of my guest posts appear 0 as those posts have their own pages on blogs with snippets of posts on home page. I wanted to ask if i should backlink to my guest posts to increase the authority, mR and mT of pages. Those posts are already appearing as backlinks in webmaster tools but if i backlink to my posts to increase mR and mT, then will it also increase the juice passed by backlinks in those posts to landing pages on my site ? Thanks,
Link Building | | shaz_lhr0 -
Are backlinks to a domain that redirects useless?
I am working on trying to get backlinks. We are currently redirecting a few Domains to our current domain name. One of the Domains that is redirecting is the main Domain, we will be advertising in the near future. Can I send backlinks to the redirected URL or does it only carry link juice if it is to the main Domain?
Link Building | | hfranz0