SM-N910U is original Note 4 or not. Please help me to identify

Dear friends,
I bought one Note 4 which model number is SM-N910U. I saw this model number whenever open its battery and showing it on phone back portion, and its IMEI number staring with "3". Please help me to identify whether this model is genuine or not and from which country it belongs?

Waiting eagerly for your valuable feedback.



Regards
Deb