Here are a few ways of finding your college registration number:

Check Your Admission Documents:

Look into the admission letter, fee receipts, or any other official document received from your college. In many cases, this letter contains your college registration number.

College Portal:

If your college has an online portal for student access, then search from your account. Your college registration number is likely to be available on your profile page or in your official academic records.

Contact the College Administration:

Contact your college's administration office or registrar's office or student affairs office

Inform them about your details like name, year of joining and course details. They might be able to assist you to get the registration number.

Check your Emails:

At times, the colleges send messages regarding the number of your registration through email as well. Also, check spam.

If you are not able to locate the registration number, do not hesitate to contact the college you recently applied to. They will be the best resource in locating that information for you.