DNS Testing
rd-resolve-test is a tool for testing DNS resolution speed and reliability. It works by repeatedly querying a server with names from a list.
$ rd-resolve-test 10.0.0.80
Starting test with 14 domains...
Using nameservers: 10.0.0.80
Only long running queries will be printed...
Starting threads...
0.54s: www.youtube.com => 66.102.7.101
0.60s: www.facebook.com => 69.63.184.150
0.65s: www.youtube.com => 66.102.7.101
0.64s: www.twitter.com => 168.143.161.20
0.52s: www.rubygems.org => 207.114.85.50
0.83s: www.facebook.com => 69.63.184.150
0.86s: www.google.com => 66.102.7.99
0.89s: www.oriontransfer.co.nz => 120.138.18.82
0.82s: www.microsoft.com => 65.55.21.250
0.55s: www.twitter.com => 168.143.161.20
0.50s: www.lucidsystems.org => 123.255.41.127
0.59s: www.amazon.com => 72.21.207.65
0.57s: www.apple.com => 17.149.160.10
0.52s: www.oriontransfer.co.nz => 120.138.18.82
Requests: 200 Average time: 0.32242531It is possible to specify a custom list of domains:
-- Contents of domains.txt
www.google.com
www.slashdot.org
-- Specify file using -d option:
$ rd-resolve-test -d domains.txt 10.0.0.80
Starting test with 2 domains...
... snip ...