Latency Zones

Hi all,

For my new project, I was wondering how you would define the zones around the world from where you would like to know the latency to your server.

I was thinking about: East North America, West North America, South America, East Europe, West Europe, North Asia (Russia), South West Asia, South East Asia, East Asia (South Korea, Japan), Australia, Africa, Greenland

Should I define them more/less detailed ?

http://ift.tt/1dvHQ0Z