Hi, so basically there are  no of colleges that you can easily get admitted to.

As you know NIT's are considered as one of the best universities and they too provide admission in the rank range you mentioned.

Following are the colleges that you can apply for a CS course:

• NIT Agartala
• NIT Meghalaya
• NIT Arunachal Pradesh
• Assam University (Silchar) etc

You can try out for application in the above colleges.

hope this is helpful

All the best