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[Solved]Unknown Host


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vasanthz

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Joined: 28 Aug 2007
Posts: 1689
Location: Tiruppur, India

PostPosted: Thu Apr 23, 2015 10:46 am
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Hi,
I have been getting Unknown Host error when trying to access this site intermittently.
This error occurs only on that specific X network.

However the site works perfectly fine on my home network.

I am no interweb expert, but is the site reachable via all the DNS servers?

Regards,
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mcmillan

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Joined: 18 May 2003
Posts: 1204
Location: India

PostPosted: Thu Apr 23, 2015 4:28 pm
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Yes, of course. Can you trace route?
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vasanthz

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Joined: 28 Aug 2007
Posts: 1689
Location: Tiruppur, India

PostPosted: Thu Apr 23, 2015 8:36 pm
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Error on web browser

Description: Unable to locate the server named "www.ibmmainframes.com"
--- the server does not have a DNS entry. Perhaps there is a misspelling in the server name, or the server no longer exists. Double-check the name and try again.


Trace route output.

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\>tracert Use [URL] BBCode for External Links
Unable to resolve target system name Use [URL] BBCode for External Links.

C:\>
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vasanthz

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Joined: 28 Aug 2007
Posts: 1689
Location: Tiruppur, India

PostPosted: Thu Apr 23, 2015 8:45 pm
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The above error was occuring few minutes back. But it is working now as I post this.
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mcmillan

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Joined: 18 May 2003
Posts: 1204
Location: India

PostPosted: Thu Apr 23, 2015 10:02 pm
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Seems like a momentary problem in your ISP's DNS cache. Anyone else facing this issue?
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mcmillan

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Joined: 18 May 2003
Posts: 1204
Location: India

PostPosted: Mon Apr 27, 2015 11:45 pm
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The solution for those who are getting "Unknown Host" error and "502 Bad Gateway" error:

Please clear your browser cookies and restart the browser. The site works fine.
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Bill Woodger

Moderator Emeritus


Joined: 09 Mar 2011
Posts: 7311
Location: Inside the Matrix

PostPosted: Mon Apr 27, 2015 11:58 pm
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Mmm, cookies. Doh! Mmm, floor cookies.
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vasanthz

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Joined: 28 Aug 2007
Posts: 1689
Location: Tiruppur, India

PostPosted: Tue Apr 28, 2015 2:52 am
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For some reason, I still am receiving Unknown Host from that specific network.
I ate all my cookies, still the same error.
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mcmillan

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Joined: 18 May 2003
Posts: 1204
Location: India

PostPosted: Tue Apr 28, 2015 6:05 am
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Can you access the site using our IP address from that specific network.

68.169.49.239
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vasanthz

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Joined: 28 Aug 2007
Posts: 1689
Location: Tiruppur, India

PostPosted: Wed Apr 29, 2015 2:11 am
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Thank you, the IP technique works fine.
Just replacing the ibmmainframes.com part with IP works fine.
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vasanthz

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Joined: 28 Aug 2007
Posts: 1689
Location: Tiruppur, India

PostPosted: Wed Apr 29, 2015 2:22 am
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I will edit my local Drivers\etc\hosts file with the above ip address, so the DNS translation does not cause issues. Thanks.
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