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
      • SEO Q&A
      • Webinars, Whitepapers, & Guides
    • Blog
    • Why Moz
      • Agency Solutions
      • Enterprise Solutions
      • Small Business Solutions
      • Case Studies
      • 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.

      NEW Keyword Suggestions by Topic
      Moz Pro

      NEW Keyword Suggestions by Topic

      Learn more
    • 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.

      What is your Brand Authority?
      Moz

      What is your Brand Authority?

      Check yours now
    • 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.

      • SEO Q&A

        Insights & discussions from an SEO community of 500,000+.

      Unlock flexible pricing & new endpoints
      Moz API

      Unlock flexible pricing & new endpoints

      Find your plan
    • Blog
    • Why Moz
      • 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.

      • Case Studies

        Explore how Moz drives ROI with a proven track record of success.

      • 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. Moz Tools
    3. Moz Pro
    4. Why my Domain Authority (DA) is Decreased from 21 to 19?

    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.

    Why my Domain Authority (DA) is Decreased from 21 to 19?

    Moz Pro
    7
    9
    10002
    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.
    • CommercePundit
      CommercePundit last edited by

      Hello,

      I would like to know how the changes in domain authority is counted by MOZ?

      Domain Authority for my this domain http://www.grandcrayon.ca/ was 21 and it is decreased to 19 in last week. I have checked the moz report and it shows DA as 19.

      We already have grandcrayon.ca and we recently redirected our .com domain (http://www.grandcrayon.com also to .ca so all the back links of .com are now showing in webmaster for .ca.

      So i would like to know the reason behind decrement in DA and is there any connection with redirection of .com domain? How can i increase DA for my website?

      1 Reply Last reply Reply Quote 0
      • The-Merchant
        The-Merchant last edited by

        This post is deleted!
        1 Reply Last reply Reply Quote 0
        • Linda-Vassily
          Linda-Vassily @Thomas_Underwood last edited by

          Hi Thomas,
          As you can see in the answers in this thread, DA can fluctuate with updates and the latest update was April 26. Do you track competitors' sites? That might tell you whether they saw similar changes. One inbound link from a low DA site won't do this. Unless there are other things going on that you didn't mention, this isn't worth worrying about.

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

            Hi

            I recently saw my DA authority drop from low 30s to high 20s by about 6 or 7 points. I'm not sure what may have caused this drop but I do know that I was pushed (by senor colleagues) to accept an inbound link from a new directory website which had a very low DA as just launched and a spam score in Moz of 7. Would this one new link have such an impact on our DA and what implications does this drop create for our overall SEO and metrics?

            Linda-Vassily 1 Reply Last reply Reply Quote 0
            • CommercePundit
              CommercePundit last edited by

              Thanks for this detail discussion and valuable suggestions.

              Now i have some clear ideas about DA. Actually all backlinks of my .com domain comes to .ca and now when i check my webmaster account - links to your site section - there are 42,492 links from .com domain linked to .ca.

              We have set a page for .com domain that we have moved to .ca and apply redirection with 2-3 seconds Pause on that page with content about moving site to grandcrayon.ca, I am sharing some screen shot here, please review it and suggest me - Do i require to audit links of .com domain and need to decrease it. Will it affect to my organic results in future?

              Looking forward for some good suggestions!

              0354qh6g53 0e44qh671c 0db4qh9n75

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

                Might've gone a little endorse-happy there, but the three of you hit all the points I was going to make. 🙂

                1 Reply Last reply Reply Quote 1
                • Linda-Vassily
                  Linda-Vassily last edited by

                  A good idea is to keep track of a couple of your competitors' domain rankings, so you can see how you are doing relative to them.

                  Another quote from the link that keszi provided:
                  "It's best to use Page Authority (PA) and Domain Authority (DA) as comparative metrics when doing research in the search results and determining which sites/pages may have more powerful/important link profiles than others."

                  So if you see that your site went down and your competitors' went down as well, you'll know not to be too concerned.

                  1 Reply Last reply Reply Quote 5
                  • donford
                    donford last edited by

                    To follow up on what Keszi has said, it is not uncommon for this value to fluctuate from update to update. The reason is because there are so many things that factor into this score. This is further complicated by the fact that the crawl will not crawl every domain every time. This means you may see less / more "linking domains", and "linking c-blocks" which are factors in DA and PA.

                    I know when you see a 10% fluctuation you may get a little worried. However, when DA is in the 20's the fluctuation will be more prominent than if you were up in the 40's. Reason being is it is exponentially harder to reach higher domain authorities, which means that there will be a larger swab of linking domains and less likely to change much if a few are missed on each crawl.

                    Hope this helps,

                    Don

                    1 Reply Last reply Reply Quote 3
                    • Keszi
                      Keszi last edited by

                      Hi,

                      I'd quote from Moz: http://moz.com/learn/seo/domain-authority

                      "How do I influence this metric?

                      Unlike other SEO metrics, Domain Authority is difficult to influence directly. It is made up of an aggregate of metrics (MozRank, MozTrust, link profile, and more) that each have an impact on this score. This was done intentionally; this metric is meant to approximate how competitive a given site is in Google.com. Since Google takes a lot of factors into account, a metric that tries to calculate it must incorporate a lot of factors, as well.

                      The best way to influence this metric is to improve your overall SEO. In particular, you should focus on your link profile—which influences MozRank and MozTrust—by getting more links from other well-linked-to pages."

                      So answering your question, Yes, you can improve the DA, while working on your SEO.

                      In general, in my belief, the 301 redirect could have influenced the score, but I would rather check the rankings and organic evolution of the website after the redirect instead of checking only the DA. If the organic results improved, I wouldn't worry to much about the DA itself. (maybe it is just only a temporary glitch until Moz recalculates it's value based on the new information they get).

                      Keszi

                      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

                      • HayleyBowyer

                        Moz Domain Authority [Megathread]

                        domain authority da

                        Hey Moz Community, We've noticed that there are questions about Domain Authority, what it is, and how to positively impact it. We're here to answer your questions! For a full overview, please see our help hub article here: https://moz.com/learn/seo/domain-authority First, it's important to keep in mind that Domain Authority (DA) is a search engine ranking score developed by Moz that predicts how likely a website is to rank in search engine result pages (SERPs). It is not a Google ranking factor. Domain Authority scores range from one to 100, with higher scores corresponding to a greater likelihood of ranking. Since DA is based on machine learning calculations, your site's score will often fluctuate as more, fewer, or different data points become available and are incorporated into those calculations. For instance, if facebook.com were to acquire a billion new links, every other site’s DA would drop relative to Facebook’s. Because more established and authoritative domains like Facebook will have increasingly larger link profiles, they take up more of the high-DA slots, leaving less room at the higher end of the scale for other domains with less robust link profiles. Therefore, it's significantly easier to grow your score from 20 to 30 than it is to grow it from 70 to 80. For this reason, it’s important to use Domain Authority as a comparative metric rather than an absolute one. The best way to influence your DA is to improve your overall site health with a focus on the quality and quantity of external links pointing to your site. Check out this video for more details on how to impact DA Happy analyzing!

                        Moz Pro | | HayleyBowyer
                        0
                      • Easigrass

                        Domain still not being found in search

                        Hi guys, I've been handed a client who needs some seo work. I've tweaked one of their pages to focus on a chosen keywords about 4 months back but still the site is not even visible using the new Domain Analysis tool from moz and it still won't rank at all for the keywords. Am I missing something here? Is there something blocking the SERP from listing the website? I've ran a site: search on Google and it returns 283 results on the website. It's puzzling me as there clearly is something stopping it from being ranked. The domain name in question is: https://cloud9inecommunications.co.uk Thanks in advance.

                        Moz Pro | | Easigrass
                        1
                      • kthomasd

                        Increase in Rankings, but search visibility is decreasing

                        I just started updating my site with the very basics, focus keyword, meta description, and page titles. I see that I am going up in my targeted keywords, however my search visibility has dropped from 3.34% to 2.78%. My assumption is that my keyword choice is a little off, however I see that I have increased in keyword rankings and dropped very little in what I was ranking for previously, plus the keyword volume seems relatively the same. In fact I've added far more keywords than I have dropped. Curious why my search visibility has dropped, however my keyword rankings only seem to increase.

                        Moz Pro | | kthomasd
                        0
                      • Cocoonfxmedia

                        Domain Audit

                        Hi What is the best tool out there to doing a full brand audit for company.  They've created at least 15 websites and have possibly many domain names which have been ordered by different people over many years. I need to find the quickest and best tool to do this with. Any suggestions would be great.

                        Moz Pro | | Cocoonfxmedia
                        0
                      • MrFrisbee

                        Automatically Check List of Sites For Links To Specific Domain

                        Hi all, Can anyone recommend a tool that will allow me to put in a list of about 200 domains that are then checked for a link back to a specific domain? I know I can do various link searches and use Google site: command on a site by site basis, but it would be much quicker if there was a tool that could take the list of domains I am expecting a link  on and then find if that link exists and if so on what page etc. Hope this makes sense  otherwise I have to spend a day doing it by hand - not fun! Thanks,
                        charles.

                        Moz Pro | | MrFrisbee
                        0
                      • Whitespark

                        Is there a way to get the domain authority of a subdomain?

                        For example, www.storage-mart.com and us.storage-mart.com both show the same DA in OSE. I believe it's the DA of the root domain. How can I compare the DA of the 'www' and 'us' subdomains?

                        Moz Pro | | Whitespark
                        0
                      • anthonytjm

                        Domain.com and domain.com/index.html duplicate content in reports even with rewrite on

                        I have a site that was recently hit by the Google penguin update and dropped a page back. When running the site through seomoz tools, I keep getting duplicate content in the reports for domain.com and domain.com/index.html, even though I have a 301 rewrite condition. When I test the site, domain.com/index.html redirects to domain.com for all directories and root. I don't understand how my index page can still get flagged as duplicate content. I also have a redirect from domain.com to www.domain.com. Is there anything else I need to do or add to my htaccess file? Appreciate any clarification on this.

                        Moz Pro | | anthonytjm
                        0
                      • paulsmithlondon

                        Spam Directories creating misleading Authority ratings

                        How does the website www.starsdirectory.com.ar get a Domain Authority of 54 and a Page Authority of 61 when Google quite correctly gives it a PR 0? It is clearly a spam directory, which Google has recognised. It is very misleading using OSE or Campaign Management when sites such as these (and there are hundreds more we have found) are skewing the results of competitiors through the use of spam links. Is there no way that SEOMoz tools can identify such spam sites when they create their ratings?

                        Moz Pro | | paulsmithlondon
                        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
                      Free SEO Tools
                      • Domain Authority Checker
                      • Link Explorer
                      • Keyword Explorer
                      • Competitive Research
                      • Brand Authority 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.