undefined
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. Technical SEO
  4. Websites on same c class IP address

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.

Websites on same c class IP address

Technical SEO
3
5
5.9k
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.
  • seoug_2005
    seoug_2005 last edited by Sep 29, 2011, 1:41 AM

    If two websites are on the same  c class IP address, what does it mean ?

    Does two websites belong to the same company ?

    1 Reply Last reply Reply Quote 0
    • KeriMorgret
      KeriMorgret last edited by Nov 23, 2011, 7:56 AM Sep 29, 2011, 3:56 PM

      But if you have 20 sites linking to you, and they're all from the same Class C IP address, and those are pretty much your ONLY links, that looks a bit fishy to the search engines. It's a signal to the search engines that "hey, this person can only get links from sites that have a high probability of the same person being in control of all of the sites".

      That's why you'll see people talk about linkbuilding and wanting to do so from different Class C IP addresses.

      1 Reply Last reply Reply Quote 4
      • Olaf
        Olaf @seoug_2005 last edited by Sep 29, 2011, 6:57 AM Sep 29, 2011, 6:57 AM

        Not necessarily. f you see different C blocks, you are usually talking about two different webhosts. So there is a chance that different sites from one owner are hosted in one C-block.

        Even an IP-address is not always used for one company. You can have your own IP-address which leads to your website. But providers can also share an IP-address for different domains/ websites for different companies.

        To find if website belong tot the same owner you need to check te registars database or tools like allwhois.com.

        1 Reply Last reply Reply Quote 0
        • seoug_2005
          seoug_2005 @Olaf last edited by Sep 29, 2011, 3:57 AM Sep 29, 2011, 3:57 AM

          Thanks Olaf.

          So, does it mean that sites hosted on same C class IP belong to one owner ?

          Olaf 1 Reply Last reply Sep 29, 2011, 6:57 AM Reply Quote 0
          • Olaf
            Olaf last edited by Sep 29, 2011, 3:51 AM Sep 29, 2011, 3:50 AM

            A "C" Block address is based on your IP address.

            For example 190.245.111.001 is a standard IP address. The c-blocks in this case are: AAA.BBB.CCC.001-254

            So these are within the same C-class:

            190.245.111.001
            190.245.111.230

            And these are different C-Class IP's:

            190.245.111.001
            190.245.222.001

            Google may assume that sites hosted in differnet C-blocks are more likely to be from different people.

            seoug_2005 1 Reply Last reply Sep 29, 2011, 3:57 AM Reply Quote 5
            • 1 / 1
            1 out of 5
            • First post
              1/5
              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

            • vaskrupp

              Website ranking declined after connecting to CDN

              Hi! We are trying to rank https://windowmart.ca for various local search terms. Our head office is in Edmonton where we try to rank https://windowmart.ca/edmonton-windows-doors/ for such terms as "windows Edmonton", "replacement windows Edmonton", "windows and doors Edmonton" as well as others. The website was the leader in its niche for around 2 years. Then we've got some server related issues, moved to a new server and connected CDN Nitropack that really improved our google speed test results. Recently we noticed that our rankings started to drop. Do you know if Nitropack can negatively effect local SEO rankings? Thank you!

              Technical SEO | Jun 15, 2021, 8:34 PM | vaskrupp
              0
            • amitdipsite15022020

              Multilingual website

              My website is https://www.india-visa-gov.in and we are doing multilingual. There are three options 1. TLD eg india-visa-gov.fr (French) india-visa-gov.de (German) 2. Subdomain eg: fr.india-visa-gov.in (French) de.india-visa-gov.in (German) 3. Folders https://www.india-visa-gov.in/fr/ (French) https://www.india-visa-gov.in/de/ (German) We have tried the 3rd option but need to know whether its better or not for the long term health from SEO. Does the MOZ DA carry better in Subdomain or TLD or Folders? What does MOZ recommend to maintain DA? Thanks

              Technical SEO | Mar 13, 2020, 9:09 AM | amitdipsite15022020
              0
            • kirupa

              Why did my website DA fell down?

              Hello, Could you please let me know why might my website's DA have fallen down in merely a week? What might be a reason? I also noticed traffic from google dropped down at the very same week. Will be very thankful for any advise!

              Technical SEO | Apr 4, 2020, 10:02 AM | kirupa
              0
            • ufmedia

              How much will changing IP addresses impact SEO?

              So my company is upgrading its Internet bandwidth.  However, apparently the vendor has said that part of the upgrade will involve changing our IP address.  I've found two links that indicate some care needs to be taken to make sure our SEO isn't harmed: http://followmattcutts.com/2011/07/21/protect-your-seo-when-changing-ip-address-and-server/ http://www.v7n.com/forums/google-forum/275513-changing-ip-affect-seo.html Assuming we don't use an IP address that has been blacklisted by Google for spamming or other black hat tactics, how problematic is it? (Note: The site hasn't really been aggressively optimized yet - I started with the company less than two weeks ago, and just barely got FTP and CMS access yesterday - so honestly I'm not too worried about really messing up the site's optimization, since there isn't a lot to really break.)

              Technical SEO | Jul 18, 2014, 12:08 PM | ufmedia
              0
            • Squall315

              Websites being hacked & duplicated, what should we do?

              Hi, please help! Our website was hacked and being totally duplicated. They even injected codes to intercept our orders. Although the codes issue had been solved, still there're two mirror sites out there. When search for some of our key words, they even have good ranks. What exactly can we do to let Google ban those two sites. Thanks in advance!

              Technical SEO | May 8, 2012, 3:30 AM | Squall315
              0
            • SmartWebPros

              How to search HTML source for an entire website

              Is there a way for me to do a "view source" for an entire website without having to right-click every page and select "view source" for each of them?

              Technical SEO | Mar 21, 2012, 8:27 PM | SmartWebPros
              0
            • slangdon

              Google is Showing Website as "Untitled"

              My freelance designer made some changes to my website and all of a sudden my homepage was showing the title I have in Dmoz. We thought maybe the NOODP tag was not correct, so we edited that a little and now the site is showing as "Untitled". The website is http://www.chemistrystore.com/. Of course he didn't save an old copy that we can revert to. That is a practice that will end. I have no idea why the title and description that we have set for the homepage is not showing in google when it previously was. Another weird thing that I noticed is that when I do ( site:chemistrystore.com ) in Google I get the https version of the site showing with the correct title and description. When I do ( site:www.chemistrystore.com ) in Google I don't have the hompage showing up from what I can tell, but there are 4,000+ pages to the site. My guess is that if it is showing up, it is showing up as "Untitled". My question is.... How can we get Google to start displaying the proper title and description again?

              Technical SEO | Feb 2, 2012, 7:47 PM | slangdon
              0
            • Audiohype

              The effect of same IP addresses on SERPs

              Hi All, Just wondering if anyone could shed some light on the following. If I was ranking number 1 for a term, what would the effects be of creating another site, hosted on the same server / IP, same whois info, same URL but a different TLD, and trying to get this to rank for the term also. Does G restrict search results to one IP per page or is this perfectly possible? (The term is fairly uncompetitive) Thanks, Ben

              Technical SEO | Apr 6, 2011, 10:47 AM | Audiohype
              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.