Is it inappropriate to call a hiring manager if their phone number isn’t provided?

Hey everyone! I recently came across an internship opportunity at a company in my city that I’m really excited about, listed on my university’s website. The posting included the hiring manager’s name and email, but not a phone number.

As I usually do, I did some extra digging and found the manager’s LinkedIn profile, which has their phone number listed for business inquiries.

Do you think it would be strange if I called to introduce myself and express my enthusiasm for the role? I’m hoping to highlight why I would be a great fit.

Would this be seen as a proactive move or just awkward? With so many candidates applying, I thought it might help me stand out.

Thanks for your input!