# Registering for Classes When You Know the CRN

For instructions on how to access the self-registration page, please visit the guide [here. ](https://kb.astate.edu/books/aos-registration/page/how-to-access-self-registration)

**Registering for a class when you know the CRN (course reference number)** The CRN is a unique 5-digit number assigned to each specific section of a course. You can find course CRNs for Online specific programs [here](https://studentsuccess.astate.edu/portal/aos-programs)

1\. To register for a class when you know the CRN, use the tab that says "Enter CRNs".

[![image-1750278226911.png](https://kb.astate.edu/uploads/images/gallery/2025-06/scaled-1680-/image-1750278226911.png)](https://kb.astate.edu/uploads/images/gallery/2025-06/image-1750278226911.png)

2\. Type the 5-digit CRN into the designated box.

[![image-1750278295818.png](https://kb.astate.edu/uploads/images/gallery/2025-06/scaled-1680-/image-1750278295818.png)](https://kb.astate.edu/uploads/images/gallery/2025-06/image-1750278295818.png)

3\. Click "Add to Summary", then click "submit" to save the changes.

[![image-1750278412201.png](https://kb.astate.edu/uploads/images/gallery/2025-06/scaled-1680-/image-1750278412201.png)](https://kb.astate.edu/uploads/images/gallery/2025-06/image-1750278412201.png)