Applying for Internships: How to find out company's address to address for Internships on cover letter?

Hi!

I'm currently working on my cover letter for internships and I hit a wall when it comes to companies' addresses. If they have multiple locations such as Los Angeles, New York, Chicago, etc., how do I find out where to address the cover letter to? Or do I just put in the company's HQ Address?

I've mainly been addressing whoever receives the application as "Dear [insert company] Recruiting Team", mainly because I don't know where to find information on said hiring managers. Is that okay? If not, where can I find that information as well?

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