Hello student,
With a rank of 2000 in obc category, you have chances of procuring a seat in the following IIT's when comparing the results of previous years

• Iit goa
• Iit Dhanbad
• Khanpur
• Iit varanasi
• Iit Delhi
• Iit Hyderabad
• Iit kharagpur
• Iit Jodhpur

The above mentioned colleges are based on the trends of the past years. However you can go through the following link to know about the cut off's and ranks for the previous years and calculate your chances of selection
https://www.google.com/amp/s/engineering.careers360.com/articles/jee-advanced-cutoff/amp
Good luck