A PRN number is provided by the college/ university once you successfully complete the registration process. The process includes fee payment, document submission, admission confirmation and other formalities. It is given following the verification of all the supporting documentation by the university enrollment section. It is advised that you contact the Office of Controller of Examinations at Chaudhary Devi Lal University, as they will be able to provide you with the PRN number. You can either visit the campus or send an email to coe@cdlu.ac.in stating your query. You can also contact by using the number 01666-239808.
Hope this was helpful. Feel free to ask for any more queries.