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Work around for DNS problem

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  #1  
Old 02-21-2007, 06:17 AM
extras extras is offline
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Join Date: Aug 2005
Location: Canada
Posts: 838

Work around for DNS problem


It's relatively rare, but we may have the problem of DNS, like currently we are having with some Canadian major ISPs.
DNS of Sympatico.ca, videotron, and possibly many others are not reolving names.
Not even Yahoo ....

Quote:
Originally Posted by dig @dns1.sympatico.ca yahoo.com
; <<>> DiG 9.2.4 <<>> @dns1.sympatico.ca yahoo.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 6404
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;yahoo.com. IN A

;; Query time: 95 msec
;; SERVER: 204.101.251.1#53(dns1.sympatico.ca)
;; WHEN: Wed Feb 21 02:02:30 2007
;; MSG SIZE rcvd: 27
In this case, we can use the DNS of someone else to go around the problem.
(We can use the "hosts" file, if we only want to access limited number of sites.)

You can do this only if you know the IP address of different and working DNS.
If not, you may have to call a friend or use another backup IPS to find out the IP.

Today, I simply used the DNS of DreamHost, as I know it's working and they shouldn't bother if one of their client use it.

So, only thing we need to do is put the IP in the Setup screen of the router, if you are using one.

Alternatively, you can put the IP of new DNS in the TCP/IP property of your PC.
(You may have to reboot the machine, depending on the OS. Also, be careful not to change unrelated setting.)


Well, I think it's the first time in several years that DNS of major ISP are gone bad like this, and I'm sure most of users are thinking their connection is simply lost.
But the connection is still working and only DNS is failing.
So, we can still use the internet by telling the PC and/or router to use another DNS.



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  #2  
Old 02-21-2007, 06:29 AM
CD Burnt CD Burnt is online now
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Join Date: Jul 2001
Location: .INdiana
Posts: 2,273
"DNS of Sympatico.ca, videotron, and possibly many others are not resolving names.
Not even Yahoo ....
"

what do they have in common?

  #3  
Old 02-21-2007, 08:10 AM
extras extras is offline
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Join Date: Aug 2005
Location: Canada
Posts: 838
Quote:
Originally Posted by CD Burnt
"DNS of Sympatico.ca, videotron, and possibly many others are not resolving names.
Not even Yahoo ....
"

what do they have in common?
I don't know. They are major providers for eastern Canada.

My ISP (local cable provider) at least fixed their DNS.

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  #4  
Old 03-15-2007, 04:18 AM
iem iem is offline
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Join Date: Apr 2002
Posts: 32
i had a problem with shawdata in canada. they were the reason that i couldn't get to my web sites on netfirms. i don't live in canada, but is there something going on there that i don't know about?

  #5  
Old 03-15-2007, 07:35 AM
extras extras is offline
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Join Date: Aug 2005
Location: Canada
Posts: 838
It was a problem of that particular day.

I'm not aware of any problem, right now.
(Other than a filer problem at DreamHost and my small local ISP going down for a while following a short power outage.)

It's another peaceful trouble shooting day.

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