hello ravi!!
with 83.3percentile and under SC category and home state andhra pradesh am sorry to say that you wont be getting any seat in NIT or IIIT.

However lets not lose hope.lets expect that something best happen to us as all these cutoff ranks are previous years trends.so we shall be postiive and hope that you get some good college with good branch.

I m providing you a link for  knowing colleges in which you can get a seat for your rank  in JEE MAINS  and category,please see the following link :

https://engineering.careers360.com/jee-main-college-predictor

Https://engineering.careers360.com/jee-main-college-predictor?utm_source=C360&utm_medium=qna&utm_campaign=jee-main-college-predictor

All the best

Thank you