How are you calculating ping in the sever browser?

Seems kind of odd that the server browser is showing pings for all servers for me ranging from 400 ms up to 9999 ms. Yet if I directly ping one of those IP addresses I get ping times around 30 ms.
Are there any plans to make this more accurate?
Are there any plans to make this more accurate?
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Another thing I noticed, me and a friend, living in separate countries, get the exact same ping to different servers.
It appears the ping in the server browser is between the master server and the game server?