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I have domains purchased through Godaddy and the site hosted through

I'm trying to decide whether which company's Name Servers to use. It's simpler to use Godaddy's BUT they provide only two, whereas provides three. (Obviously it's more complicated than that: is there a simple point of failure, response time, etc.)

So I'm wondering specifically how to evaluate the quality of the domain name servers for each (response time, uptime, etc.)

Update: I found these two tools that might help

  • - measure all sorts of things on the specific domain name and it's DNS servers.
  • DNS tester - tests just the response time of the DNS servers.
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Just so you know, the two or three nameserver host names can correspond to dozens of different anycast machines around the world. – ceejayoz May 6 '13 at 21:03
I love Pingdom's DNS tool also: – David W May 6 '13 at 21:32
up vote 2 down vote accepted

i'd say - if you are concerned about the resiliency / quality / [low] latency - go for dedicated dns provider using uni-cast like

otherwise - it does not really matter - both and are pretty big players.

things you might want to consider:

  • response time from locations where you are most likely to have clients
  • their uptime
  • [lack] of support for ipv6, dnssec
  • information how did they handled past outages [pretty difficult to measure]
  • competence of the client-facing staff [same]

in all cases - it's pretty difficult to get information about the past performance

tools that can be helpful in checking general dns health:

site like can be used to check latency to your dns serevers from different points of the globe [or empirically verify if you're using unicast/anycast dns server]

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Do you want to add the two tools I found to improve your answer? – Clay Nichols May 6 '13 at 20:11
@ClayNichols sure – pQd May 6 '13 at 20:51… – dmourati May 6 '13 at 21:05

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