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I've been having a lot of trouble viewing certain websites - Gawker Media, DeviantArt, etc. - and through further investigation they all appear to be using a CDN called Cotendo. On my machine, and only this one, connections reset themselves midway through the download most of the time. This is not browser-specific; even wget (Cygwin) is unable to download anything without retrying a few times. This happens inside virtual machines as well.

Unfortunately, I'm pretty stumped on why this is happening. My hosts file is empty (except for a couple LAN-specific things) and I've checked a few different DNS servers, but I can't really think of anything else to try. Anyone have any ideas?

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  • If it's only one system, then it might not be his ISP. @slhck
    – Darth Android
    Jun 21, 2012 at 22:08
  • Ah, I missed that specific part, you're right. @dar
    – slhck
    Jun 21, 2012 at 22:10
  • I'm from Cotendo's Technical Support Team. I came across with your post on "Cotendo CDN servers are unreliable". I would like to try and help you resolve this issue if you could answer a few questions: 1. Is there any way for you to provide a traceroute from where you are to: "gawker.com" for example? 2. For how long have you been experiencing the issue? 3. Where in the world are you located?
    – user141641
    Jun 22, 2012 at 1:24
  • Traceroute from working machine - Traceroute from unreliable machine - Wget from unreliable machine - This has been happening for a week or two. I am in St. Paul, MN, US.
    – user139050
    Jun 22, 2012 at 3:49
  • UPDATE: I tried using a VPN and it worked through there, and it was reliable for a few minutes after I disconnected as well. Then it went back to only working once every few requests.
    – user139050
    Jun 22, 2012 at 4:14

2 Answers 2

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if you are having an issue you should do some trace routes to see what path you are taking to the PoP that is serving you. Like the previous comment it could be your ISP. You can try changing the name server you use to a ln open one and see if you get a different PoP as CDNs mostly use your name server to determine where you are.

If its your ISP, call them or open a ticket. If its Cotendo do the same.

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  • It's not ISP related. Other computers on my network are just fine
    – user139050
    Jun 22, 2012 at 3:51
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Turns out this was being caused by some of my wifi settings. I finally reproduced the problem on a different machine when it was sitting right next to the first one. Thanks for your help anyway, everyone!

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  • Remember to select this as the right answer, and better yet, update this one with more information so you can help the next person with this issue!
    – Journeyman Geek ♦
    Jun 26, 2012 at 8:45

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