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Is there a desktop or online tool that will query multiple name servers (dozens ideally) to get an idea if and how a DNS record change is propagating?

I know of many free tools, but they only check one name server. I'm thinking something more along the lines of the awesome namebench utility.

Maybe I don't understand it well enough, but I get frustrated sometimes after making changes and not knowing if they are propagating properly.

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Be sure to set the TTL to the time you want it to take to propogate everywhere ahead of time. If somebody asks the dns server for a result, and the TTL has expired, the dns server should check again. –  becomingwisest Feb 4 '11 at 1:18
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2 Answers

up vote 7 down vote accepted

Online tool -> http://www.whatsmydns.net

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Awesome tool, thanks cma! –  Matt Feb 4 '11 at 1:05
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Awesome just what I was looking for. –  jb510 Feb 4 '11 at 8:49
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I like check-host. Here's example.com data:

http://check-host.net/check-dns?host=example.com

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Thanks. I like that this add IPV6. –  jb510 Mar 9 '13 at 21:39
    
Note, whatsmydns.net has the option for IPV6 too if you select AAAA records, hadn't really noticed before –  jb510 Mar 9 '13 at 21:45
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