+852 is the country code for Hong Kong, not China (there's still a difference for now!)......
+56 is the country code for Chile, so that seems to match......
he seems to be based in Albuquerque, so don't know why he doesn't have a US-based phone, unless he got some weird internet deal from Hong Kong and has the whatsapp for chatting with family back home???
that's all I got!