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

      Access 20 years of data with flexible pricing
      Moz API

      Access 20 years of data with flexible pricing

      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. Best practice for duplicate website content: same root domain name but different extension

    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.

    Best practice for duplicate website content: same root domain name but different extension

    Intermediate & Advanced SEO
    3
    4
    1183
    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.
    • turnbullholdingsltd
      turnbullholdingsltd last edited by

      Hi there

      I have a new client who has two websites:

      http://www.bayofislandsteambuilding.co.nz
      http://www.bayofislandsteambuilding.org.nz

      They are the same in every regard apart from the domain extension (.co.nz & .org.nz) which is likely to be causing them issues with Google ranking given the huge amount of duplicate content.

      What is the best practice approach to fixing this? Normally, if I was starting from scratch, I would set one of the extensions as an alias which redirects to the main domain.

      Thanks in advance.

      Laurie

      1 Reply Last reply Reply Quote 0
      • MoosaHemani
        MoosaHemani Banned @turnbullholdingsltd last edited by

        Two URLs containing the same content will be considered as duplicated content, do the domain level redirection so that every URL should redirect to the home page of the preferred domain.

        1 Reply Last reply Reply Quote 1
        • turnbullholdingsltd
          turnbullholdingsltd @jesse-landry last edited by

          Hi - thanks for the response.

          Do I still need to set up 301 redirects for every page or can I do it server-side for the entire domain? And is this approach better than using the rel=”canonical” link element in the http header tags?

          Thanks 🙂

          L

          MoosaHemani 1 Reply Last reply Reply Quote 0
          • jesse-landry
            jesse-landry last edited by

            301 Redirect one to the other. That's it that's all.

            turnbullholdingsltd 1 Reply Last reply Reply Quote 0
            • 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

            • TinoSharp

              Hreflang and canonical tag for new country specific website - different base domain

              I have a little different situation compared to most other questions which asks for hreflang and canonical tags for country specific version of websites. This is an SEO related question and I was hoping to get some insight on your recommendations. We have an existing Australian website - say - ausnight.com.au now we want to launch a UK version of this website - the domain is - uknight.co.uk please note, we are not only changing from .com.au to .co.uk.... but the base domain name as well changed - from ausnight to uknight as you can understand, the audience for both websites is different. Both websites has most pages same with same contents.... the questions I have is - Should we put canonical tag on the new website pages? If we don't put canon tag on new website pages, what is the impact on the SEO ranking of current website? I believe we need to put hreflang tag on both websites to tell google that we have another language version (en-au vs en-gb) of the same page. Is this correct?

              Intermediate & Advanced SEO | | TinoSharp
              0
            • Bee159

              :Pointing hreflang to a different domain

              Hi all, Let's say I have two websites: www.mywebsite.com and www.mywebsite.de - they share a lot of content but the main categories and URLs are almost always different. Am I right in saying I can't just set the hreflang tag on every page of www.mywebsite.com to read: rel='alternate' hreflang='de' href='http://mywebsite.de' /> That just won't do anything, right? Am I also right in saying that the only way to use hreflang properly across two domains is to have a customer hreflang tag on every page that has identical content translated into German? So for this page: www.mywebsite.com/page.html my hreflang tag for the german users would be: <link < span="">rel='alternate' hreflang='de' href='http://mywebsite.de/page.html' /></link <> Thanks for your time.

              Intermediate & Advanced SEO | | Bee159
              0
            • ajiabs

              Duplicate content due to parked domains

              I have a main ecommerce website with unique content and decent back links. I had few domains parked on the main website as well specific product pages. These domains had some type in traffic. Some where exact product names.  So main main website www.maindomain.com had domain1.com , domain2.com parked on it. Also had domian3.com parked on www.maindomain.com/product1. This caused lot of duplicate content issues. 12 months back, all the parked domains were changed to 301 redirects. I also added all the domains to google webmaster tools. Then removed main directory from google index. Now realize few of the additional domains are indexed and causing duplicate content. My question is what other steps can I take to avoid the duplicate content for my my website 1. Provide change of address in Google search console. Is there any downside in providing change of address pointing to a website? Also domains pointing to a specific url , cannot provide change of address 2. Provide a remove page from google index request in Google search console. It is temporary and last 6 months. Even if the pages are removed from Google index, would google still see them duplicates? 3. Ask google to fetch each url under other domains and submit to google index. This would hopefully remove the urls under domain1.com and doamin2.com eventually due to 301 redirects. 4. Add canonical urls for all pages in the main site. so google will eventually remove content from doman1 and domain2.com due to canonical links. This wil take time for google to update their index 5. Point these domains elsewhere to remove duplicate contents eventually. But it will take time for google to update their index with new non duplicate content. Which of these options are best best to my issue and which ones are potentially dangerous? I would rather not to point these domains elsewhere. Any feedback would be greatly appreciated.

              Intermediate & Advanced SEO | | ajiabs
              0
            • DarinPirkey

              Best Practices for Moving a Sub-Domain to a Sub-Folder

              One of my clients is moving their subdomain to a subfolder on their main domain.  (ie.  blog.example.com to example.com/blog) I just wanted to get everyone's thoughts on some best practices for things we should be doing/looking for when making this move.? ie WMT, .htaccess, 301s etc? Thanks.

              Intermediate & Advanced SEO | | DarinPirkey
              0
            • HiteshBharucha

              Duplicate content on subdomains.

              Hi Mozer's, I have a site www.xyz.com and also geo targeted sub domains www.uk.xyz.com, www.india.xyz.com and so on. All the sub domains have the content which is same as the content on the main domain that is www.xyz.com. So, I want to know how can i avoid content duplication. Many Thanks!

              Intermediate & Advanced SEO | | HiteshBharucha
              0
            • JustinTaylor88

              Duplicating an existing website - new name and reskin

              Would re-skinning, duplicating an exising ecommerce website with a new domain name cause any ranking issues? The plan would be that all product data, pricing info etc would be identical, the site would have a minor redesign to change colours, logos etc and all duplicate content would be rel=canonicaled to the original site. In case you are wondering the reason for this is a customer with an existing site wants to try out a new brand without incorporating a massive development costs. The majority of traffic would be driving through google shopping, a bit of PPC, social etc. Is this site duplication likely to harm the original site or will setting up rel=canonical to point to the original site going to be sufficient enough to prevent this happening? Is there anything else is should consider? Many thanks for your help

              Intermediate & Advanced SEO | | JustinTaylor88
              0
            • Hyrule

              Splitting one Website into 2 Different New Websites with 301 redirects, help?

              Here's the deal. My website stbands.com does fairly well. The only issue it is facing a long term branding crisis. It sells custom products and sporting goods. We decided that we want to make a sporting goods website for the retail stuff and then a custom site only focusing on the custom stuff. One website transformed and broken into 2 new ones, with two new brand names. The way we are thinking about doing this is doing a lot of 301 redirects, but what do we do with the homepage (stbands.com) and what is the best practice to make sure we don't lose traffic to the categories, etc.? Which new website do we 301 the homepage to? It's rough because for some keywords we rank 3 or 4 times on the first page. Scary times, but something must be done for the long term. Any advise is greatly appreciated. Thank you in advance. We are set for a busy next few months 🙂

              Intermediate & Advanced SEO | | Hyrule
              0
            • joseph.chambers

              Duplicate Content | eBay

              My client is generating templates for his eBay template based on content he has on his eCommerce platform. I'm 100% sure this will cause duplicate content issues. My question is this.. and I'm not sure where eBay policy stands with this but adding the canonical tag to the template.. will this work if it's coming from a different page i.e. eBay? Update: I'm not finding any information regarding this on the eBay policy's: http://ocs.ebay.com/ws/eBayISAPI.dll?CustomerSupport&action=0&searchstring=canonical So it does look like I can have rel="canonical" tag in custom eBay templates but I'm concern this can be considered: "cheating" since rel="canonical is actually a 301 but as this says: http://googlewebmastercentral.blogspot.com/2009/12/handling-legitimate-cross-domain.html it's legitimately duplicate content. The question is now: should I add it or not? UPDATE seems eBay templates are embedded in a iframe but the snap shot on google actually shows the template. This makes me wonder how they are handling iframes now. looking at http://www.webmaster-toolkit.com/search-engine-simulator.shtml does shows the content inside the iframe. Interesting. Anyone else have feedback?

              Intermediate & Advanced SEO | | joseph.chambers
              1

            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.