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. Can subdomains hurt your primary domain's SEO?

    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.

    Can subdomains hurt your primary domain's SEO?

    Intermediate & Advanced SEO
    3
    3
    993
    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.
    • BHeffernan
      BHeffernan last edited by

      Our primary website https://domain.com has a subdomain https://subDomain.domain.com and on that subdomain we have a jive-hosted community, with a few links to and fro. In GA they are set up as different properties but there are many SEO issues in the jive-hosted site, in which many different people can create content, delete content, comment, etc. There are issues related to how jive structures content, broken links, etc. My question is this: Aside from the SEO issues with the subdomain, can the performance of that subdomain negatively impact the SEO performance and rank of the primary domain? I've heard and read conflicting reports about this and it would be nice to hear from the MOZ community about options to resolve such issues if they exist. Thanks.

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

        All of the content that you have on a subdomain and all of the links that the subdomain attracts could have been working to strengthen your root domain.

        In Google you are going out to fight the heavyweights.  Do you want to do that with a couple light weight platforms or do you want to unite the clans and attack with all that you got.   That is the choice that you make by running subdomains.

        I moved and redirected my subdomains into folders on the main website a long time ago and the results were great.

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

          Under certain circumstances it can harm the rankings and SEO performance of your main site. In terms of low-end technical SEO issues like broken links and stuff, that usually wouldn't be a problem (unless it were creating loads of broken links from the sub-site, to the main site). If you had a more substantial issue like an active penalty (manual GSC notification) or a malware  threat (or hacked content) on your subdomain, that could assuredly harm the main site's rankings. Except in extreme circumstances such as these - I wouldn't worry about it too much

          1 Reply Last reply Reply Quote 1
          • 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

          • anagentile

            Redirection of 100 domain to Main domain affects SEO?

            domain seo redirecting domain

            Hi guys, An email software vendor managed by a different area of my company redirected 100 domains used for unsolicited email campaigns to my main domain. These domains are very likely to get blacklisted at some point. My SEO tool now is showing me all those domains as "linking" to my main site as do-follow links. The vendor states that this will not affect my main domain/website in any way. I'm highly concerned. I would appreciate your professional opinion about this. Thanks!!

            Intermediate & Advanced SEO | | anagentile
            0
          • Saba.Elahi.M.

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

            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!

            Intermediate & Advanced SEO | | Saba.Elahi.M.
            0
          • rickyporco

            After hack and remediation, thousands of URL's still appearing as 'Valid' in google search console. How to remedy?

            I'm working on a site that was hacked in March 2019 and in the process, nearly 900,000 spam links were generated and indexed. After remediation of the hack in April 2019, the spammy URLs began dropping out of the index until last week, when Search Console showed around 8,000 as "Indexed, not submitted in sitemap" but listed as "Valid" in the coverage report and many of them are still hack-related URLs that are listed as being indexed in March 2019, despite the fact that clicking on them leads to a 404. As of this Saturday, the number jumped up to 18,000, but I have no way of finding out using the search console reports why the jump happened or what are the new URLs that were added, the only sort mechanism is last crawled and they don't show up there. How long can I expect it to take for these remaining urls to also be removed from the index? Is there any way to expedite the process? I've submitted a 'new' sitemap several times, which (so far) has not helped. Is there any way to see inside the new GSC view why/how the number of valid URLs in the indexed doubled over one weekend?

            Intermediate & Advanced SEO | | rickyporco
            0
          • JB1977

            SEO'ing a sports advice website

            Hi Team Moz, Despite being in tech/product development for 10+ years, I'm relatively new to SEO (and completely new to this forum) so was hoping for community advice before I dive in to see how Google likes (or perhaps doesn't) my soon to be built content. I'm building a site (BetSharper, an early-stage work in progress) that will deliver practical, data orientated predictive advice prior to sporting events commencing. The initial user personas I am targeting would need advice on specific games so, as an example, I would build a specific page for the upcoming Stanley Cup Game 1 between the Capitals and the Tampa Bay Lighting. I'm in the midst of keyword research and believe I have found some easier to achieve initial keywords (I'm realistic, building my DA will take time!) that include the team names but don't reference dates or state of the tournament. The question is, hypothetically if I ranked for this page for this sporting event this year, would it make sense to refresh the same page with 2019 matchup content when they meet again next year, or create a new page? I am assuming I would be targeting the same intended keywords but wondering if I get google credit for 2018 engagement post 2019 refresh. Or should I start fresh with a new page and specifically target keywords afresh each time? I read some background info on canonical tabs but wasn't sure if it was relevant in my case. I hope I've managed to articulate myself on what feels like an edge case within the wonderful world of SEO. Any advice the community delivers would be much appreciated...... Kind Regards James.

            Intermediate & Advanced SEO | | JB1977
            0
          • cos2030

            How can I get Bing to index my subdomain correctly?

            Hi guys, My website exists on a subdomain (i.e. https://website.subdomain.com) and is being indexed correctly on all search engines except Bing and Duck Duck Go, which list 'https://www.website.subdomain.com'. Unfortunately my subdomain isn't configured for www (the domain is out of my control), so searchers are seeing a server error when clicking on my homepage in the SERPs. I have verified the site successfully in Bing Webmaster Tools, but it still shows up incorrectly. Does anyone have any advice on how I could fix this issue? Thank you!

            Intermediate & Advanced SEO | | cos2030
            0
          • kevinliao

            What happens to a domain in SERPs when it's set to redirect to another?

            We have just acquired a competing website and are wondering whether to leave it running as is for now, or set the domain to redirect to our own site. If we set up this redirect, what would happen to the old site in Google SERPs? Would the site drop off from results? If so, would we capture this new search traffic or is it a free for all and all sites compete for the search traffic as normal? Thanks in advance. Paul

            Intermediate & Advanced SEO | | kevinliao
            0
          • Locals

            Primary Domain or Redirect?

            We are starting a new travel guide for a resort town. I have bought an expired domain with decent related links and PR (which seems to have survived the transfer (4 months ago). Beofre we launch the new site I am trying to decide if we should use this expired domain as the primary URL for the new site or just do a permanent redirect and buy a new domain that better matches the theme of the site. I am obviously concerned with starting from scatch with a new domain. I am confident we can build some good rellevant links in a short time but this space is very competetive. Any input would be greatly appreciated.

            Intermediate & Advanced SEO | | Locals
            0
          • bronxpad

            Domain expiration and seo

            My domain name is free with my service with yahoo but it expires every year and gets extended automatically as I continue service, how does this impact my seo efforts? I've heard that the search engines prefer sites to expire in 3 years or more? Is this a fact?

            Intermediate & Advanced SEO | | bronxpad
            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.