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Test DNS change

Posted on 2011-03-12
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Last Modified: 2012-05-11
I'm sure this is a dumb question, but I'm going to ask anyway.

Is there a way to test a new DNS server before you assign it as your name server with your domain registrar?

I'm thinking along the same lines of changing your HOSTS to test A Records before you apply them.

Thanks in advance!
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Question by:charvett
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Expert Comment

by:omarfarid
ID: 35120181
you can point some systems to use it as DNS server for your domain
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by:charvett
ID: 35120200
Not sure I understand. Are you suggesting I should change the DNS server setting in the IP configuration of my local machine?

To provide a little more detail, I'm switching hosted DNS services from one hosting company to another. I've added all the A Records to the new hosted DNS service. But before I make the switch of nameservers from one to the other I'd like to be sure it's going to resolve everything correctly.

Thanks!
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Expert Comment

by:omarfarid
ID: 35120324
You should have a client pc where you can set the dns server for it. Then you can try to resolve A records from this pc using your new dns server.
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Assisted Solution

by:farzanj
farzanj earned 100 total points
ID: 35121217
If it is Linux, use the dig command
#Forward lookup
dig @localhost <testdomain.com>

#Reverse lookup
dig @localhost -x <192....>

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Expert Comment

by:farzanj
ID: 35121228
You should also check your zone files with the following command
named-checkzone FQDN ZONE_FILE_NAME.zone
 named-checkzone 15.168.192.in-addr.arpa 192.168.15.zone

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RizyDeWino earned 100 total points
ID: 35121897
You can check the reoslution for domain using dig command before you actually start using the new Nameservers.

Lets assume the domains you want to check is DomainA.com
and the New Nameserver is   newns.nameservers.net  and has IP 2.3.4.5

you can use below dig command :

dig DomainA.com @newns.nameservers.net
Or
dig DomainA.com @2.3.4.5

This way you are quring the Nameserver directory for your domain and if new server is doing resolution correctly you will get the results accordingly in result of the dig command.
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Author Closing Comment

by:charvett
ID: 35122779
Thanks, that's exactly what I needed!
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