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.
Does a subdomain benefit from being on a high authority domain?
-
I think the title sums up the question, but does a new subdomain get any ranking benefits from being on a pre-existing high authority domain. Or does the new subdomain have to fend for itself in the SERPs?
-
Thanks for the help Ryan

-
Rand recently did a whiteboard Friday on this very thing: http://moz.com/blog/subdomains-vs-subfolders-rel-canonical-vs-301-how-to-structure-links-optimally-for-seo-whiteboard-friday, the pertinent part on your question being:
You're asking, "Should I put my content on a subdomain, or should I put it in a subfolder?" Subdomains can be kind of interesting sometimes because there's a lot less technical hurdles a lot of the time. You don't need to get your engineering staff or development staff involved in putting those on there. From a technical operations perspective, some things might be easier, but from an SEO perspective this can be very dangerous. I'll show you what I mean.
So let's say you've got blog.yoursite.com or you've got www.yoursite.com/blog. Now engines may indeed consider content that's on this separate subdomain to be the same as the content that's on here, and so all of the links, all of the user and usage data signals, all of the ranking signals as an entirety that point here may benefit this site as well as benefiting this subdomain. The keyword there is "may."
I can't tell you how many times we've seen and we've actually tested ourselves by first putting content on a subdomain and then moving it back over to the main domain with Moz. We've done that three times over that past two years. Each time we've seen a considerable boost in rankings and in search traffic, both long tail and head of the demand curve to these, and we're not alone. Many others have seen it, particularly in the startup world, where it's very popular to put blog.yourwebsite.com, and then eventually people move it over to a subfolder, and they see ranking benefits.
If at all possible, make it part of the domain in a subfolder.
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
-
Subdomain or subfolder?
Hello, We are working on a new site. The idea of the site is to have an ecommerce shop, but the homepage will be a content page, basically a blog page.
Technical SEO | | pinder325
My developer wants to have the blog (home) page on a subdomain, so blog.example.com, because it will be easier to make a nice content page this way, and the the rest of the site will just be on the root domain (example.com). I'm just worried that this will be bad for our SEO efforts. I've always thought it was better to use a sub folder rather than a subdomain. If we get links to the content on the subdomain, will the link juice flow to the shop, on the root domain? What are your thoughts?0 -
Tool to Generate All the URLs on a Domain
Hi all, I've been using xml-sitemaps.com for a while to generate a list of all the URLs that exist on a domain. However, this tool only works for websites with under 500 URLs on a domain. The paid tool doesn't offer what we are looking for either. I'm hoping someone can help with a recommendation. We're looking for a tool that can: Crawl, and list, all the indexed URLs on a domain, including .pdf and .doc files (ideally in a .xls or .txt file) Crawl multiple domains with unlimited URLs (we have 5 websites with 500+ URLs on them) Seems pretty simple, but we haven't been able to find something that isn't tailored toward management of a single domain or that can crawl a huge volume of content.
Technical SEO | | timfrick0 -
Domains
My questions is what to do with old domains we own from a past business. Is it advantages to direct them to the new domain/company or is that going to cause a problem for the new company. They are not in the same industry.
Technical SEO | | KeylimeSocial0 -
Best geotargeting strategy: Subdomains or subfolders or country specific domain
How have the relatively recent changes in how G perceives subdomains changed the best route to onsite geotargeting i.e. not building out new country specific sites on country specific and hosted domains and instead developing sub-domains or sub-folders and geo-targeting those via webmaster tools ? In other words, given the recent change in G perception, are sub-domains now a better option than a sub-folder or is there not much in it ? Also if client has a .co.uk and they want to geo-target say France, is the sub-domain/sub-folder route still an option or is the .co.uk still too UK specific, and these options would only work using a .com ? In other words can sites on country specific domains (.co.uk , .fr, .de etc etc) use sub-folders or domains to geo-target other countries or do they have no option other than to develop new country specific (domains/hosting/language) websites ? Any thoughts regarding current best practice in this regard much appreciated. I have seen last Febs WBF which covers geotargeting in depth but the way google perceives subdomains has changed since then Many Thanks Dan
Technical SEO | | Dan-Lawrence0 -
SEO Benefit from Redirecting New Exact Match Domains?
Hi, All! This is a question asked in the old Q & A section, but the answer was a little ambiguous and it was about 3 years ago, so I decided to repost and let the knowledgeable SEO public answer... From David LaFerney: It’s clear that it’s much easier to get high rankings for a term if your domain is an exact match for the query. If you own several such domains that are very related such as – investmentrealestate.com, positivecashflow.com, and rentalproperty.com – would you be able to benefit from those by 301ing them to a single site, or would you have to maintain separate sites to help capture those targeted phrases? In a nutshell – SEO wise, is it worth owning multiple domains to exactly match valuable search phrases? Or do you lose the exact match benefit when you redirect?>> To clarify: redirecting an old domain with lots of history and links to a new exact match domain seems to contain SEO benefit. (You get links+exact match domain, approximately.) But the other way around? Redirecting a new exact match domain to an older domain with links? Does that do anything for the ranking of the old domain for the exact match keyword? Or absolutely nothing? (My impression has been that it's nothing, but the question came up for a client and I just wanted to make sure I wasn't missing something.) Thanks in advance!
Technical SEO | | debi_zyx0 -
Delete old site but redirect domain to a new domain and site
I just have a quick query and I have a feeling about what the answer is so just wanted to see what you guys thought... Basically I am working on a client site. This client has a few other websites that are divisions of their company. However these divisions/websites are no longer used. They are wanting to delete the websites but redirect the domains to their name main website. They believe this will pass on SEO benefits as these old division sites are old and have a good PR and history. I'm unsure for DEFINITE, which way is correct?
Technical SEO | | Weerdboil0 -
Multiple Domains, Same IP address, redirecting to preferred domain (301) -site is still indexed under wrong domains
Due to acquisitions over time and the merging of many microsites into one major site, we currently have 20+ TLD's pointing to the same IP address as our "preferred domain:" for our consolidated website http://goo.gl/gH33w. They are all set up as 301 redirects on apache - including both the www and non www versions. When we launched this consolidated website, (April 2010) we accidentally left the settings of our site open to accept any of our domains on the same IP. This was later fixed but unfortunately Google indexed our site under multiple of these URL's (ignoring the redirects) using the same content from our main website but swapping out the domain. We added some additional redirects on apache to redirect these individual pages pages indexed under the wrong domain to the same page under our main domain http://goo.gl/gH33w. This seemed to help resolve the issue and moved hundreds of pages off the index. However, in December of 2010 we made significant changes in our external dns for our ip addresses and now since December, we see pages indexed under these redirecting domains on the rise again. If you do a search query of : site:laboratoryid.com you will see a few hundred examples of pages indexed under the wrong domain. When you click on the link, it does redirect to the same page but under the preferred domain. So the redirect is working and has been confirmed as 301. But for some reason Google continues to crawl our site and index under this incorrect domains. Why is this? Is there a setting we are missing? These domain level and page level redirects should be decreasing the pages being indexed under the wrong domain but it appears it is doing the reverse. All of these old domains currently point to our production IP address where are preferred domain is also pointing. Could this be the issue? None of the pages indexed today are from the old version of these sites. They only seem to be the new content from the new site but not under the preferred domain. Any insight would be much appreciated because we have tried many things without success to get this resolved.
Technical SEO | | sboelter0