Hi Samir this is Jakka Vamsi Krishna

I'll give you the ranking of all NITs of the year in 2017-18 and 2016-17 first.

Ranking of all NITs 2017-18

NIT Tiruchirapalli - 11

NIT Rourkela Odisha - 12

NIT Suathkal Karnataka - 22

NIT Warangal Telangana - 34

Motilal Nehru NIT UP - 41

Visveswaraya NIT Maharashtra - 42

NIT Calicut Kerala - 44

Sardar Vallabhbhai NIT Gujarat - 50

NIT Silchar Assam - 53

NIT Durgapur WB - 55

NIT Hamirpur HP - 59

NIT Kurukshetra Haryana - 60

Malaviya NIT Rajasthan - 70

NIT Manipur Manipur - 87

NIT Meghalaya Meghalaya - 100

These are the overall ranking of NITs.

And my direct answer to your first question is  NIT Silchar, NIT Agartala, and NIT Meghalaya are the top 3 NITs in NORTH-EAST India.

My answer to your second question is, as per the latest reports NERIST has slipped below the top 100 among the top 20.

ALL THE BEST

If any queries please let us know