DNSTester

SubSecret DNSTester

DNSTester is a simple java-based tool for testing quality of the systems default DNS Server. This can be a useful first step into finding out why pages sometimes takes a long time to load or do not load at all.

Download

JAR file also contains source code.

Date	Version	File	Description
29. September 2013	1.10	http://files.subsecret.dk/DNSTester110.jar http://files.subsecret.dk/DNSTester110-src.zip	Now using dnsjava for DNS lookups. With dnsjava it is possible to test any dns server (not just system's default dns server)
26. May 2013	1.00	http://files.subsecret.dk/DNSTester100.jar	Initial release

Benchmarks

Here is some benchmarks i did on various DNS Server with the tool.
Delay 0.5 sec.

DNS	Provider	Requests	Average delay (ms.)	Median delay (ms.)	Min delay (ms.)	Max delay (ms.)	Failed
8.8.8.8	Google	1000	100	66	64	533	0
Router DNS (8.8.8.8)	Netgear DGND4000 V1.1.00.14	1000	197	133	66	5398	0
208.67.222.222	OpenDNS	1000	122	100	50	15304	0
89.150.129.4	Fullrate	1000	28	25	24	204	0
Router DNS (89.150.129.4)	Netgear DGND4000 V1.1.00.14	1000	66	27	25	415	0

License

SubSecret DNSTester is released under the GPL
dnsjava is released under the BSD License