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Research :: How to check a website using CDN ?

Written by: Kiran Kankipati - Published: 19-Jul-2016


If you are new to CDN Technology, you can read the Introduction of CDN (Content Delivery Networks or Content Distribution Networks) over HERE.

Using a CDN for a website is a always suggested based on the popularity of your website. But do you know how to check if a website is using a CDN ?

Here is how you can check quite easily.

Lets take for example Facebook. Open the Facebook website in your browser.
1-research-how-to-check-a-website-using-cdn-facebook

Do right-click and select the “View Page Source” option in the menu:
2-research-how-to-check-a-website-using-cdn-facebook-view-page-source

Now search for keywords such as “cdn”, “edge”, etc. You can find the website resources (such as scripts/images/etc) should be pointing to alternative links as shown below:
3-research-how-to-check-a-website-using-cdn-facebook-page-source

In this case Facebook contains the resources with URLs pointing to CDN hosted locations. As you can see it has the location “m-static.ak.fbcdn.net”. This stands for: Static Akamai Facebook CDN. So this is a clue that Facebook is majorly hosted on Akamai CDN.

But one should also understand since Facebook is so massive, Facebook may/will contain its own CDN (or cloud sort of) infrastructure. But if this goes beyond a massive scale, certainly they can get outside world CDN subscriptions as in this case they got via Akamai.

Let us see another example such as the website ComputerWorld online magazine.
4-research-how-to-check-a-website-using-cdn-computerworld-page-source

In this case ComputerWorld is using the Edgesuite.net. Edgesuite.net is run by Akamai Technologies more specific for AD content. So once again we can see how a website uses a CDN Service.

In the case of Linkedin, it uses the Limelight CDN service/vendor. You can see the resource URLs containing static.licdn.com.
5-research-how-to-check-a-website-using-cdn-linkedin-page-source



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