[jcampbell1]

Very nice article. I recently switched to amazon from dyn. One thing I noticed is that amazon has unique hostnames for the nameservers.

Can you comment on how Amazon's use of unique name server names impacted your results? I have a suspicion that amazon is half as fast because it requires two lookups instead of 1. ns1.dyn.org is likely to be cached, but llkadjsf.amazondns.net is unlikely to be cached.

[jread]

It won't generally affect the real user test results because of a warmup/training phase in the test when those DNS records would be cached within the recursive chain.