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Is there any web-based or desktop tool that can tell me the performance and quality of a name server? I have the option to use my ISP or my domain registar's name server, I need some help to decide.

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Sheer speed probably isn't the only thing you should be looking for. It's very possible that your ISP will show as better if you're testing from a connection on the ISP's network, where as your Hosting provider might have multiple servers local to various exchanges that would make their DNS servers faster over all!

Are the DNS servers in different separate network segments? Are they using technologies like Anycast/Heartbeat to ensure redundancy? What's the management interface like? What kind of monitoring do they have?

It's relatively easy to set-up DNS servers like Bind, NSD, PowerDNS etc. these days to be very fast on benchmarks like given by Madboy, but there's lots of other factors to consider as well.

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How can I find out more about the things you mentioned? redundancy – Esha Jan 9 '11 at 17:20
what do you guys think of – Esha Jan 9 '11 at 17:21
The only way you can really find out about the redundancy is to ask them or check to see if it's documented on their site. Google's Public DNS is primarily for resolving DNS, not for hosting you own domains. Can I confirm whether you're looking for name servers to host your own domain name (Authoritative DNS) or just name servers to point your computer at (Resolvers)? – Niall Donegan Jan 9 '11 at 17:27
I am using google dns mostly. It's easy to remember and I think responsivness/redundancy is ok. – MadBoy Jan 9 '11 at 17:42
the one where i can configure my domain/subdomain/mx... – Esha Jan 9 '11 at 17:52

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