Gonna use this map:
EU got 4:
Iceland/Ireland/UK is 1st.
Central Europe is the 2nd.
Estonia/Latvia/Estland/Turkey/etc is the 3rd.
Western Russia is the 4th. Because really, nobody further east than that would be playing in EU servers with a decent ping.
NA got 6, possibly 5:
Alaska is the 1st.
Washington/California is the 2nd.
Arizona etc is the 3rd.
MEXICO/Texas/Kansas/Dakota is the 4th.
Cuba/Florida/Ohio is the 5th.
The 6th is that weird little one on the top right (dunno if it's Canada or USA).
Also sorry that I didn't mention Canada. I really have no clue what the different regions are called.