Hello Aspirant,

Based on your rank and previous year college cut off their are some nit or iiit colleges where you can get seat. Some of them colleges I listed here:-

1. NIT Raipur(Mechanical, Bio - Technology)
2. NIT Rourkela(Food Processing, Bio - Technology)
3. NIT Silchar(Electronics and Communication)
4. NIT Surat(Mechanical)

For more colleges you can go through the given link and predict your college :-

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Dear aspirant
At first lots of congratulations for your results .
I. According to trends of previous years and this year's JEE MAIN cut off I am afraid to inform you that your chances of getting admission into colleges NITs and IIITs are almost negative despite of OBC category. However You can try in state level counselling and private colleges .One thing is important that admission in OBC ,category entirey depends upon that particular category rank , not the All India rank.
you can check previous years cut off
https://engineering.careers360.com/articles/jee-main-cutoff-for-top-nits
check your chances here
https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Best Wishes.