301s vs. rel=canonical for duplicate content across domains
-
Howdy mozzers,
I just took on a telecommunications client who has spent the last few years acquiring smaller communications companies. When they took over these companies, they simply duplicated their site at all the old domains, resulting in a bunch of sites across the web with the exact same content. Obviously I'd like them all 301'd to their main site, but I'm getting push back.
Am I OK to simply plug in rel=canonical tags across the duplicate sites? All the content is literally exactly the same.
Thanks as always
-
Awesome - thanks Matthew.
-
Thanks Ade. This is really helpful. Much appreciated!
-
Hey,
You can do cross domain canonicals. Google does support that (http://www.youtube.com/watch?v=zI6L2N4A0hA) and the one time I had to use that, it did seem to help. That being said, I'm not sure if Bing supports that or not.
Hope that helps.
-
Hi James,
Using a rel=canonical will work but I am guessing that at some point your client will want to updated the content of their website. If you do go for rel=canonical then this would mean that you would have to also update that same content to all of the other domains.
Depending on your domain/website hosting set-up you may be able to get around this by adding all of the duplicate domains as Parked Domains on the website hosting server but this can get very messy.
Unless there is a really good reason not to then I would use 301's.
If any of the domains has been hit with the Penguin update then I wouldn't use a 301 for those domains.
Cheers.
Ade.
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
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.
Related Questions
-
Site Crawl -> Duplicate Page Content -> Same pages showing up with duplicates that are not
These, for example: | https://im.tapclicks.com/signup.php/?utm_campaign=july15&utm_medium=organic&utm_source=blog | 1 | 2 | 29 | 2 | 200 |
Technical SEO | | writezach
| https://im.tapclicks.com/signup.php?_ga=1.145821812.1573134750.1440742418 | 1 | 1 | 25 | 2 | 200 |
| https://im.tapclicks.com/signup.php?utm_source=tapclicks&utm_medium=blog&utm_campaign=brightpod-article | 1 | 119 | 40 | 4 | 200 |
| https://im.tapclicks.com/signup.php?utm_source=tapclicks&utm_medium=marketplace&utm_campaign=homepage | 1 | 119 | 40 | 4 | 200 |
| https://im.tapclicks.com/signup.php?utm_source=blog&utm_campaign=first-3-must-watch-videos | 1 | 119 | 40 | 4 | 200 |
| https://im.tapclicks.com/signup.php?_ga=1.159789566.2132270851.1418408142 | 1 | 5 | 31 | 2 | 200 |
| https://im.tapclicks.com/signup.php/?utm_source=vocus&utm_medium=PR&utm_campaign=52release | Any suggestions/directions for fixing or should I just disregard this "High Priority" moz issue? Thank you!0 -
Duplicate Content - Different URLs and Content on each
Seeing a lot of duplicate content instances of seemingly unrelated pages. For instance, http://www.rushimprint.com/custom-bluetooth-speakers.html?from=topnav3 is being tracked as a duplicate of http://www.rushimprint.com/custom-planners-diaries.html?resultsperpg=viewall. Does anyone else see this issue? Is there a solution anyone is aware of?
Technical SEO | | ClaytonKendall0 -
Duplicate Content Mystery
Hi Moz community! I have an ongoing duplicate mystery going on here and I'm hoping someone here can answer my question. We have an Ecommerce site that has a variety of product pages and category pages. There are Rel canonicals in place, along with parameters in GWT, and there are also URL rewrites. Here are some scenarios, maybe you can give insight as to what’s exactly going on and how to fix it. All the duplicates look to be coming from category pages specifically. For example:
Technical SEO | | Ecom-Team-Access
This link re-writes: http://www.incipio.com/cases/tablet-cases/amazon-kindle-cases-sleeves.html?cat=407&color=152&price=20- To: http://www.incipio.com/cases/tablet-cases/amazon-kindle-cases-sleeves.html The rel canonical tag looks like this: http://www.incipio.com/cases/tablet-cases/amazon-kindle-cases-sleeves.html" /> The CONTENT is different, but the URLs are the same. It thinks that the product category view is the same as the all products view, even though there is a canonical in there telling it which one is the original. Some of them don’t have anything to do with each other. Take a look: Link identified as duplicate: http://www.incipio.com/cases/smartphone-cases/htc-smartphone-cases/htc-windows-phone-8x-cases.html?color=27&price=20- Link this is a duplicate of: http://www.incipio.com/cases/macbook-cases/macbook-pro-13in-cases.html Any idea as to what could be happening here?0 -
How to prevent duplicat content issue and indexing sub domain [ CDN sub domain]?
Hello! I wish to use CDN server to optimize my page loading time ( MaxCDN). I have to use a custom CDN sub domain to use these services. If I added a sub domain, then my blog has two URL (http://www.example.com and http://cdn.example.com) for the same content. I have more than 450 blog posts. I think it will cause duplicate content issues. In this situation, what is the best method (rel=canonical or no-indexing) to prevent duplicate content issue and prevent indexing sub domain? And take the optimum service of the CDN. Thanks!
Technical SEO | | Godad0 -
An odd duplicate content issue...
Hi all, my developers have just assured me that nothing has changed form last week but in the today's crawl I see all the website duplicated: and the difference on the url is the '/' so basically the duplicated urls are: htts://blabla.bla/crop htts://blabla.bla/crop/ Any help in understanding why is much appreciated. thanks
Technical SEO | | LeadGenerator0 -
We have set up 301 redirects for pages from an old domain, but they aren't working and we are having duplicate content problems - Can you help?
We have several old domains. One is http://www.ccisound.com - Our "real" site is http://www.ccisolutions.com The 301 redirect from the old domain to the new domain works. However, the 301-redirects for interior pages, like: http://www.ccisolund.com/StoreFront/category/cd-duplicators do not work. This URL should redirect to http://www.ccisolutions.com/StoreFront/category/cd-duplicators but as you can see it does not. Our IT director supplied me with this code from the HT Access file in hopes that someone can help point us in the right direction and suggest how we might fix the problem: RewriteCond%{HTTP_HOST} ccisound.com$ [NC] RewriteRule^(.*)$ http://www.ccisolutions.com/$1 [R=301,L] Any ideas on why the 301 redirect isn't happening? Thanks all!
Technical SEO | | danatanseo0 -
Duplicate page content
hi I am getting an duplicate content error in SEOMoz on one of my websites it shows http://www.exampledomain.co.uk http://www.exampledomain.co.uk/ http://www.exampledomain.co.uk/index.html how can i fix this? thanks darren
Technical SEO | | Bristolweb0 -
How to get rid of duplicate content
I have duplicate content that looks like http://deceptionbytes.com/component/mailto/?tmpl=component&link=932fea0640143bf08fe157d3570792a56dcc1284 - however I have 50 of these all with different numbers on the end. Does this affect the search engine optimization and how can I disallow this in my robots.txt file?
Technical SEO | | Mishelm1