The server you are currently streaming from is shown beside Stream Host in Stats for Nerds box (right click on the player):
Then you can decode the 'stream host' string after the sn- (server name) as follows
(or just remember the string that corresponds to your ISP/location)
0123456789abcdefghijklmnopqrstuvwxyz (encoded)
r1---sn-ntqe7n7l --> ntqe7n7l --> syd10s02
r2---sn-a5meknee --> a5meknee --> lax17s11
r6---sn-8vq54voxo1-53as --> 8vq54voxo1-53as --> vodafonenz-akl3
r1---sn-uo1-53as --> uo1-53as --> tnz-akl3
r1---sn-j5aa2a0n-fabe --> j5aa2a0n-fabe --> callplus-wlg1