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If I try to view my site using any web proxy from any country, I can open my domain. However, from where I am whenever I type in the URL in the browser, I get the message:

This webpage is not available

The webpage at http://<mydomain>.com/ might be temporarily down or it may have moved permanently to a new web address

Even using the opendns cache check tool, I can see that the DNS is being resolved properly. Funny thing is, I have set my secondary DNS in my computer to openDNS too.

Even if I try to ping it using my windows command prompt, I get the message :

Ping request could not find host &lt;mydomain&gt;.com. Please check the name and try again.

Doing an nslookup <mydomain>.com gives me :

C:\Users\user>nslookup <mydomain>.com
Server:  UnKnown
Address:  192.168.1.1

*** UnKnown can't find <mydomain>.com: Server failed

My question is, How do I troubleshoot why I cannot open my site through the browser on my computer? This has been happening for about 2 weeks now and all the other sites are working. I have tried this using 3 different internet service providers and 4 different computers in my area.

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We can't troubleshoot without knowing the domain. We can try to walk you through it step-by-step but it will be painful. Start out by doing a "whois" on the domain. Then do an "SOA" query for the domain against each listed server. Make sure they all reply authoritatively. – David Schwartz Dec 14 '11 at 6:48
See your %SystemRoot%\system32\drivers\etc\hosts – artistoex Dec 14 '11 at 9:07
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closed as off topic by soandos, DragonLord, Gareth, Nifle, ChrisF Dec 17 '11 at 23:36

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1 Answer

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The DNS server at 192.168.1.1 has the mydomain.com domain defined in a zone, or is cached with a negative TTL (ie at some point the dns server did a lookup for the A record before it exists, and has cached that fact that it is non-existent - for three weeks, which is unlikely).

Change your DNS to use OpenDNS for both primary and secondary and it will resolve.

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