Hi Samarth

On the basis of JEE Advanced scores, you can get admission to IIT's only. For admission to NITs, IIITs & CFTIs/ GFTIs, your JEE Main scores will be taken into consideration. Please note that for admission to NITs, IIITs, CFTIs and IITs, you will have a common counselling procedure which is called as JoSAA.

Refer to the link given below to know more about the admission procedure:

https://engineering.careers360.com/articles/josaa

Hope this helps! 

All the best !