Skip to content
    Moz logo Menu open Menu close
    • Products
      • Moz Pro
      • Moz Pro Home
      • Moz Local
      • Moz Local Home
      • STAT
      • Moz API
      • Moz API Home
      • Compare SEO Products
      • Moz Data
    • Free SEO Tools
      • Domain Analysis
      • Keyword Explorer
      • Link Explorer
      • Competitive Research
      • MozBar
      • More Free SEO Tools
    • Learn SEO
      • Beginner's Guide to SEO
      • SEO Learning Center
      • Moz Academy
      • MozCon
      • Webinars, Whitepapers, & Guides
    • Blog
    • Why Moz
      • Digital Marketers
      • Agency Solutions
      • Enterprise Solutions
      • Small Business Solutions
      • The Moz Story
      • New Releases
    • Log in
    • Log out
    • Products
      • Moz Pro

        Your all-in-one suite of SEO essentials.

      • Moz Local

        Raise your local SEO visibility with complete local SEO management.

      • STAT

        SERP tracking and analytics for enterprise SEO experts.

      • Moz API

        Power your SEO with our index of over 44 trillion links.

      • Compare SEO Products

        See which Moz SEO solution best meets your business needs.

      • Moz Data

        Power your SEO strategy & AI models with custom data solutions.

      Track AI Overviews in Keyword Research
      Moz Pro

      Track AI Overviews in Keyword Research

      Try it free!
    • Free SEO Tools
      • Domain Analysis

        Get top competitive SEO metrics like DA, top pages and more.

      • Keyword Explorer

        Find traffic-driving keywords with our 1.25 billion+ keyword index.

      • Link Explorer

        Explore over 40 trillion links for powerful backlink data.

      • Competitive Research

        Uncover valuable insights on your organic search competitors.

      • MozBar

        See top SEO metrics for free as you browse the web.

      • More Free SEO Tools

        Explore all the free SEO tools Moz has to offer.

      NEW Keyword Suggestions by Topic
      Moz Pro

      NEW Keyword Suggestions by Topic

      Learn more
    • Learn SEO
      • Beginner's Guide to SEO

        The #1 most popular introduction to SEO, trusted by millions.

      • SEO Learning Center

        Broaden your knowledge with SEO resources for all skill levels.

      • On-Demand Webinars

        Learn modern SEO best practices from industry experts.

      • How-To Guides

        Step-by-step guides to search success from the authority on SEO.

      • Moz Academy

        Upskill and get certified with on-demand courses & certifications.

      • MozCon

        Save on Early Bird tickets and join us in London or New York City

      Unlock flexible pricing & new endpoints
      Moz API

      Unlock flexible pricing & new endpoints

      Find your plan
    • Blog
    • Why Moz
      • Digital Marketers

        Simplify SEO tasks to save time and grow your traffic.

      • Small Business Solutions

        Uncover insights to make smarter marketing decisions in less time.

      • Agency Solutions

        Earn & keep valuable clients with unparalleled data & insights.

      • Enterprise Solutions

        Gain a competitive edge in the ever-changing world of search.

      • The Moz Story

        Moz was the first & remains the most trusted SEO company.

      • New Releases

        Get the scoop on the latest and greatest from Moz.

      Surface actionable competitive intel
      New Feature

      Surface actionable competitive intel

      Learn More
    • Log in
      • Moz Pro
      • Moz Local
      • Moz Local Dashboard
      • Moz API
      • Moz API Dashboard
      • Moz Academy
    • Avatar
      • Moz Home
      • Notifications
      • Account & Billing
      • Manage Users
      • Community Profile
      • My Q&A
      • My Videos
      • Log Out

    The Moz Q&A Forum

    • Forum
    • Questions
    • Users
    • Ask the Community

    Welcome to the Q&A Forum

    Browse the forum for helpful insights and fresh discussions about all things SEO.

    1. Home
    2. SEO Tactics
    3. Intermediate & Advanced SEO
    4. When creating a sub-domain, does that sub-domain automatically start with the DA of the main domain?

    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.

    When creating a sub-domain, does that sub-domain automatically start with the DA of the main domain?

    Intermediate & Advanced SEO
    5
    5
    2151
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as question
    Log in to reply
    This topic has been deleted. Only users with question management privileges can see it.
    • Saba.Elahi.M.
      Saba.Elahi.M. Subscriber last edited by

      We have a website with a high DA and we are considering sub-folder or sub-domain. One of the great benefits of a sub-folder is that we know we get to keep the high DA, is this also the case for sub-domains?

      Also if you could provide any sources of information that specify this, I can't see to find anything!

      1 Reply Last reply Reply Quote 0
      • ZenboundSEO
        ZenboundSEO last edited by

        I would go with a sub-folder if passing DA is your goal. As far as I understand it, DA is not considered by Moz for sub-domains. Here is a similar post on the same topic. I hope it helps.

        https://moz.com/community/q/is-moz-da-inherited-from-tld-for-all-subdomains-on-the-tld https://moz.com/community/q/is-there-a-way-to-get-the-domain-authority-of-a-subdomain

        1 Reply Last reply Reply Quote 1
        • KevinBudzynski
          KevinBudzynski last edited by

          **Also, although I would also be curious to know if a subdomain inherits DA from the main domain, it probably doesn't need to be a part of the decision making process for choosing between subdomain and subfolder.  **

          I know that the sub & parent share the same DA. I was under the impression that one doesn't necessarily inherit the other DA, just an accumulation of the "strength" calculated by Moz of the domain shared between the parent & subs.

          1 Reply Last reply Reply Quote 1
          • Nozzle
            Nozzle last edited by

            I agree with EGOL, if you have the choice, use subfolders instead of subdomains.

            I know sometimes, there are development reasons why a company decides to move forward with subdomains. And those can rank just fine too. It's just best to let decision makers know that the SEO department is voting for subfolders.

            Also, although I would also be curious to know if a subdomain inherits DA from the main domain, it probably doesn't need to be a part of the decision making process for choosing between subdomain and subfolder.  As EGOL said, "ranking ability and DA are different things", so the DA passed through or not passed through to a subdomain will not be the reason for ranking well or not in Google.

            1 Reply Last reply Reply Quote 2
            • EGOL
              EGOL last edited by

              In the question between a subfolder and a subdomain...  it is clear and it is murky...

              Search engines say things and often do the things that they say.  They also do things without sayin' that they did them and you are left to figure out what happened or how things work on your own.

              If you have been running websites for a long time (24 years here), you might know that Google and other search engines have treated subdomains and folders differently,  identically and murkily.   It depends upon what year and month you are talking about.

              **The constant is that subfolders have always inherited ranking ability from their parent domain, and will likely do that into the future.  **

              So, if you want assurance into the future, using a subfolder is your best bet.

              Looking at DA... it is irrelevant in the subdomain and subfolder discussion.  DA is a moz number that kinda correlates with search engine rankings, but just part of the time.   Ranking ability and DA are different things.

              1 Reply Last reply Reply Quote 4
              • 1 / 1
              • First post
                Last post

              Got a burning SEO question?

              Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.


              Start my free trial


              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.

              • See all categories

              Related Questions

              • HimalayanInstitute

                WordPress Sub-directory for SEO

                wordpress subdirectory domain authority

                Hi There, I'm working on a WordPress site that includes a premium content blog with approx 900 posts. As part of the project, those 900 posts and other membership functionality will be moved from the main site to another site built specifically for content/membership. Ideally, we want the existing posts to remain on the root domain to avoid a loss in link juice/domain authority. We initially began setting up a WordPress Multisite using the sub-directory option. This allows for the main site to be at www.website.com and the secondary site to be at www.website.com/secondary. Unfortunately, the themes and plugins we need for the platform do not play nicely with WordPress Multisite, so we started seeking a new solution, and, discovered that a second instance of WordPress can be installed in a subdirectory on the server. This would give us the same subdirectory structure while bypassing WordPress Multisite and instead, having two separate single-site installs. Do you foresee any issues with this WordPress subdirectory install? Does Google care/know these are two separate WordPress installs and do we risk losing any link juice/domain authority?

                Intermediate & Advanced SEO | | HimalayanInstitute
                0
              • rayatarh545123

                Why some domains and sub-domains have same DA, but some others don't?

                Hi I noticed for some blog providers in my country, which provide a sub-domian address for their blogs. the sub-domain authority is exactly as the main domain. Whereas, for some other blog providers  every subdomain has its different and lower authority. for example "ffff.blog.ir" and "blog.ir" both have domain authority of 60. It noteworthy to mention that the "ffff.blog.ir" does not even exist! This is while mihanblog.com and hfilm.mihanblog.com has diffrent page authority.

                Intermediate & Advanced SEO | | rayatarh545123
                0
              • kcb8178

                Sub Domain Usage

                I see that the gap uses gap.com, oldnavy.gap.com and bananarepublic.gap.com.  Wouldn't a better approach for SEO to have oldnavy.com, bananarepublic.com and gap.com all separate?  Is there any benefit to using the approach of store1.parentcompany.com, store2.parentcompany.com etc?  What are the pros and cons to each?

                Intermediate & Advanced SEO | | kcb8178
                0
              • WebMarkets

                Realistic expectations to increase domain authority

                A) what is a realistic timeline to increase a websites domain authority by 20 points? B) what are the most important factors to increase a websites domain authority?

                Intermediate & Advanced SEO | | WebMarkets
                0
              • vtmoz

                What are best page titles for sub-domain pages?

                Hi Moz communtity, Let's say a website has multiple sub-domains with hundreds and thousands of pages. Generally we will be mentioning "primary keyword & "brand name" on every page of website. Can we do same on all pages of sub-domains to increase the authority of website for this primary keyword in Google? Or it gonna end up as negative impact if Google consider as duplicate content being mentioned same keyword and brand name on every page even on website and all pages of sub domains? Thanks

                Intermediate & Advanced SEO | | vtmoz
                0
              • Carissamay

                Why is my domain authority still 1?

                I changed the domain of my website from www.vanillacrush.co.uk to www.carissamay.co.uk at the end of December and yet my DA for carissamay is still 1. As advised, I set up a 301 redirect from VC to CM which seems to be working fine. However when I check on redirect detective it tells me I also have a 302 set up. Could this be confusing things? http://www.vanillacrush.co.uk http://www.vanillacrush.co.uk/ http://www.carissamay.co.uk Any help would be greatly appreciated! Many thanks

                Intermediate & Advanced SEO | | Carissamay
                0
              • Bio-RadAbs

                Can you redirect specific sub domain URLs?

                ello! We host our PDFs, Images, CSS all in a sub domain. For the question, let's call this sub.cyto.com. I've noticed a particular PDF doing really well, infact it has gathered valuable external links from high authoritative sites. To top it off, it gets good visits. I've been going back and forth with our developers to move this PDF to a subfolder structure.
                For example: www.cyto.com/document/xxxx.pdf In my perspective, if I move this and set up a permanent redirect, then all the external links the PDF gathered, link juice and future visits will be attributed to the main website. Since the PDF is existing in the subdomain, I can't even track direct visits nor get the link juice. It appears in top position of Google as well. My developer says it is better to keep images, pdf, css in the subdomain. I see his point and an idea I have is to: convert the pdf to a webpage. Set up a 301 redirect from the existing subdomain to this webpage Upload the pdf with a new name and link to it from the webpage, so users can download if they choose to. This should give me the existing rank juice. However, my question is whether you can set up a 301 redirect for just a single subdomain URL to a folder structure URL? sub.cyto.com/xxx.pdf to www.cyto.com/document/xxxx.pdf?

                Intermediate & Advanced SEO | | Bio-RadAbs
                0
              • AdeLewis

                How long should a domain redirect take?

                Hi, I know that this is a 'How long is a piece of string?' type question but at what point should the ranking value of site A pass over to site B following a domain 301 redirect? I have shifted a domain over to a new URL, same hosting server, same IP address. I haven't made any URL changes or any content changes other than to change the site logo to match the new domain name. Domain B is basically an exact clone of domain A. I have redirected Domain A to domain B using the following line at the top of the .htaccess file:- Redirect 301 / http://www.newdomain.com/ I have submitted a sitemap for the new domain via google webmaster tools. It looks like the original domain as been completely indexed by google following the redirect as all rankings have been dropped from the results and there are no results for a site:olddomain.com search. Surely the rankings should have switched over at this point? Any help would be much appreciated.
                Ade.

                Intermediate & Advanced SEO | | AdeLewis
                0

              Get started with Moz Pro!

              Unlock the power of advanced SEO tools and data-driven insights.

              Start my free trial
              Products
              • Moz Pro
              • Moz Local
              • Moz API
              • Moz Data
              • STAT
              • Product Updates
              Moz Solutions
              • SMB Solutions
              • Agency Solutions
              • Enterprise Solutions
              • Digital Marketers
              Free SEO Tools
              • Domain Authority Checker
              • Link Explorer
              • Keyword Explorer
              • Competitive Research
              • Brand Authority Checker
              • Local Citation Checker
              • MozBar Extension
              • MozCast
              Resources
              • Blog
              • SEO Learning Center
              • Help Hub
              • Beginner's Guide to SEO
              • How-to Guides
              • Moz Academy
              • API Docs
              About Moz
              • About
              • Team
              • Careers
              • Contact
              Why Moz
              • Case Studies
              • Testimonials
              Get Involved
              • Become an Affiliate
              • MozCon
              • Webinars
              • Practical Marketer Series
              • MozPod
              Connect with us

              Contact the Help team

              Join our newsletter
              Moz logo
              © 2021 - 2025 SEOMoz, Inc., a Ziff Davis company. All rights reserved. Moz is a registered trademark of SEOMoz, Inc.
              • Accessibility
              • Terms of Use
              • Privacy

              Looks like your connection to Moz was lost, please wait while we try to reconnect.