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
-
Page not Ranking I feel helpless!
Hi there 🙂 I have been working at SEO for quite some time and I am such a noob. I have even done an online course. I am at my wits end. My website is https://www.urbani.com.au. I changed to https about 1 month ago. I want to rank for "outdoor furniture perth". Recently my homepage has stopped ranking for this keyword, and a useless blog page started ranking instead (www.urbani.com.au/tag/outdoor-furniture-perth/), on page 5 of google. I got rid of that page and redirected it to my homepage. Do you know what the problem is? Why won't google rank my homepage for "outdoor furniture perth"? It is ranking for "outdoor wicker furniture perth", but for "outdoor furniture perth" it has disappeared from the face of this earth. Thank you so much, if I can get help for this it would save my business! Whitney
Link Building | | vhitnah0 -
Backlinks from ads on parked domains? Is this possible?
Hello Moz Friends, So as I was researching some competitive backlinks and I noticed a lot of backlinks that a clients competitor has are on parked domains and they appear to be google ads from some point. You know the pages that this page no longer exists, or hey do you want to buy this domain? and it has like 6 google ads on it? Yep those pages. My clients industry is construction and their competitor has links from zombie websites, foreign, websites and more. But the links are no longer on the page. Like when it was crawled, their ad was showing. Does this make any sense and is it usually temporary? Thank you for your thoughts friends!
Link Building | | asbchris0 -
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 -
Backlinks From Scraper Sites - Should I Disavow Them?
I'm going through all the links (hopefully) to my website and I've found so many links from site scrapers. For instance: http://www.fzccg.com/cmsteam/dvbbs/boke.asp?zkhod76681.showtopic.148760.html ... which links to my site with anchor text "abercrombie uk How To Change Your Wiper Blades" It is surely not realistic to think that I can contact all the scraper site owners. So what should I do with this kind of links?
Link Building | | sbrault740 -
Does it help to have more than one backlink from the same website?
I have received two follow links from a website with a domain authority of 64 because I contributed to 2 blog posts. Will it help my site to get more back links from this same website or should I focus my efforts elsewhere?
Link Building | | dealblogger0 -
What are your latest backlinks? How can you tell?
Hi Can anyone recommend a tool (which is up to date) which shows the latest backlinks (in date order) that has been added to a website? Mainly I am planning for checking for bad links etc Many Thanks
Link Building | | ocelot0 -
Backlinks point to files
Hello, Some competitors have which I am analyzing backlinks that point to files, eg. Dwg,. Fla. Pps. How is this possible? Thank you.
Link Building | | d2bcomunicacao0