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 your brand’s footprint in AI search
      Moz Pro

      Track your brand’s footprint in AI search

      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.

      Let your business shine with Listings AI

      Let your business shine with Listings AI

      Get found
    • 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. Technical SEO
    4. CDN Being Crawled and Indexed by Google

    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.

    CDN Being Crawled and Indexed by Google

    Technical SEO
    2
    2
    2031
    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.
    • Scott-Thomas
      Scott-Thomas last edited by

      I'm doing a SEO site audit, and I've discovered that the site uses a Content Delivery Network (CDN) that's being crawled and indexed by Google. There are two sub-domains from the CDN that are being crawled and indexed. A small number of organic search visitors have come through these two sub domains. So the CDN based content is out-ranking the root domain, in a small number of cases.

      It's a huge duplicate content issue (tens of thousands of URLs being crawled) - what's the best way to prevent the crawling and indexing of a CDN like this? Exclude via robots.txt?

      Additionally, the use of relative canonical tags (instead of absolute) appear to be contributing to this problem as well. As I understand it, these canonical tags are telling the SEs that each sub domain is the "home" of the content/URL.

      Thanks!

      Scott

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

        It sounds like you got a hold of the problem.

        Verify the subdomains in WMT

        Block the CDN subdomains with robots.txt

        Request site removal in WMT for the subdomains

        make the canonicals absolute

        Keep the blocked subdomains in WMT, when you log in you will see a message by the subdomains saying "Critical issue with your site" which is just telling you that the site is blocked.. I like to keep it in there so I can see it's still blocked.

        1 Reply Last reply Reply Quote 2
        • 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

        • Chris_Wright

          Removing a site from Google index with no index met tags

          Hi there! I wanted to remove a duplicated site from the google index. I've read that you can do this by removing the URL from Google Search console and, although I can't find it in Google Search console, Google keeps on showing the site on SERPs. So I wanted to add a "no index" meta tag to the code of the site however I've only found out how to do this for individual pages, can you do the same for a entire site? How can I do it? Thank you for your help in advance! L

          Technical SEO | | Chris_Wright
          1
        • SpodekandCo

          Is there a way to get a list of all pages of your website that are indexed in Google?

          I am trying to put together a comprehensive list of all pages that are indexed in Google and have differing opinions on how to do this.

          Technical SEO | | SpodekandCo
          0
        • TheHecksler

          Google tries to index non existing language URLs. Why?

          Hi, I am working for a SAAS client. He uses two different language versions by using two different subdomains.
          de.domain.com/company for german and en.domain.com for english. Many thousands URLs has been indexed correctly. But Google Search Console tries to index URLs which were never existing before and are still not existing. de.domain.com**/en/company
          en.domain.com
          /de/**company ... and an thousand more using the /en/ or /de/ in between. We never use this variant and calling these URLs will throw up a 404 Page correctly (but with wrong respond code  -  we`re fixing that 😉 ). But Google tries to index these kind of URLs again and again. And, I couldnt find any source of these URLs. No Website is using this as an out going link, etc.
          We do see in our logfiles, that a Screaming Frog Installation and moz.com w opensiteexplorer were trying to access this earlier. My Question: How does Google comes up with that? From where did they get these URLs, that (to our knowledge) never existed? Any ideas? Thanks 🙂

          Technical SEO | | TheHecksler
          0
        • AlisonMills

          Desktop & Mobile XML Sitemap Submitted But Only Desktop Sitemap Indexed On Google Search Console

          Hi! The Problem We have submitted to GSC a sitemap index. Within that index there are 4 XML Sitemaps. Including one for the desktop site and one for the mobile site. The desktop sitemap has 3300 URLs, of which Google has indexed (according to GSC) 3,000 (approx). The mobile sitemap has 1,000 URLs of which Google has indexed 74 of them. The pages are crawlable, the site structure is logical. And performing a Landing Page URL search (showing only Google/Organic source/medium) on Google Analytics I can see that hundreds of those mobile URLs are being landed on. A search on mobile for a longtail keyword from a (randomly selected) page shows a result in the SERPs for the mobile page that judging by GSC has not been indexed. Could this be because we have recently added rel=alternate tags on our desktop pages (and of course corresponding canonical ones on mobile). Would Google then 'not index' rel=alternate page versions? Thanks for any input on this one. PmHmG

          Technical SEO | | AlisonMills
          0
        • netzkern_AG

          Does Google index internal anchors as separate pages?

          Hi, Back in September, I added a function that sets an anchor on each subheading (h[2-6]) and creates a Table of content that links to each of those anchors. These anchors did show up in the SERPs as JumpTo Links. Fine. Back then I also changed the canonicals to a slightly different structur and meanwhile there was some massive increase in the number of indexed pages - WAY over the top - which has since been fixed by removing (410) a complete section of the site. However ... there are still ~34.000 pages indexed to what really are more like 4.000 plus (all properly canonicalised). Naturally I am wondering, what google thinks it is indexing. The number is just way of and quite inexplainable. So I was wondering: Does Google save JumpTo links as unique pages? Also, does anybody know any method of actually getting all the pages in the google index? (Not actually existing sites via Screaming Frog etc, but actual pages in the index - all methods I found sadly do not work.) Finally: Does somebody have any other explanation for the incongruency in indexed vs. actual pages? Thanks for your replies! Nico

          Technical SEO | | netzkern_AG
          0
        • SierraPCB

          Why google indexed pages are decreasing?

          Hi, my website had around 400 pages indexed  but from February, i noticed a huge decrease in indexed numbers and it is continually decreasing. can anyone help me to find out the reason. where i can get solution for that?  will it effect my web page ranking ?

          Technical SEO | | SierraPCB
          0
        • melen

          Staging site and "live" site have both been indexed by Google

          While creating a site we forgot to password protect the staging site while it was being built.  Now that the site has been moved to the new domain, it has come to my attention that both the staging site (site.staging.com) and the "live" site (site.com) are both being indexed.  What is the best way to solve this problem?  I was thinking about adding a 301 redirect from the staging site to the live site via HTACCESS. Any recommendations?

          Technical SEO | | melen
          0
        • fugu

          Dynamically-generated .PDF files, instead of normal pages, indexed by and ranking in Google

          Hi, I come across a tough problem. I am working on an online-store website which contains the functionlaity of viewing products details in .PDF format (by the way, the website is built on Joomla CMS), now when I search my site's name in Google, the SERP simply displays my .PDF files in the first couple positions (shown in normal .PDF files format: [PDF]...)and I cannot find the normal pages there on SERP #1 unless I search the full site domain in Google. I really don't want this! Would you please tell me how to figure the problem out and solve it. I can actually remove the corresponding component (Virtuemart) that are in charge of generating the .PDF files. Now I am trying to redirect all the .PDF pages ranking in Google to a 404 page and remove the functionality, I plan to regenerate a sitemap of my site and submit it to Google, will it be working for me? I really appreciate that if you could help solve this problem. Thanks very much. Sincerely SEOmoz Pro Member

          Technical SEO | | fugu
          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 - 2026 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.