"Are your DNS nameservers impeding your Internet experience?
A unique, comprehensive, accurate & free Windows (and Linux/Wine) utility to determine the exact performance of local and remote DNS nameservers . . .
“You can't optimize it until you can measure it”
Now you CAN measure it!"
"Although GRC's DNS Benchmark is packed with features to satisfy the needs of the most demanding Internet gurus (and this benchmark offers features designed to enable serious DNS performance investigation), the box below demonstrates that it is also extremely easy for casual and first-time users to run:"
GRC's*|*DNS Nameserver Performance Benchmark**