Hello aspirant

Hope you are doing great there . I am sorry to say this but the score you mentioned is not clear since you have not used the decimal in your percentile score . Auuming that you are trying to say 81 percentile , I regret to say this , but you are not eligible to grab a seat in some NIT or IIIT . According to the assumed percentile score mentioned by you , your predicted CRL rank lies somewhere around 194370 - 218500 , and your category rank will be around 48,600-55,000.

You can also use the link given below to predict colleges

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

Hope my answer helps

Wish you all the very best!