I'm trying to fetch a page programatically and it takes exactly 10 seconds to resolve the host, every time. On another machine it takes exactly 30 seconds. Both Linux.
My code is in Java but the problem is reproducable using wget:
time wget -d --header "User-Agent:Mozilla/5.0 (X11; Linux i686) AppleWebKit/534.24 (KHTML, like Gecko) Ubuntu/10.10 Chromium/11.0.696.65 Chrome/11.0.696.65 Safari/534.24" http://www.sportsdirect.com
This hangs for 10 secs on:
Resolving www.sportsdirect.com... 18.104.22.168
We're running on Linux.
To confuse things further browsers on the same machine fetch the same page immediately.