Dear Prithvi,

I am not clear about your questions so i am considering you are asking for IIT Delhi-

the lowest range stands near rank 5000 to get admission into IIT delhi, which correponds to range of 210-220 marks out of 360.

You can check for cutoffs from 2016 year as well given below:-

https://engineering.careers360.com/articles/jee-advanced-cutoff-for-iit-delhi