Getting references after a company closes after 13 years as a warehouse supervisor

The company closed and I am not sure how to reach former colleagues. I have read a lot of threads here and could not find my exact situation. HR only confirms titles and dates. Is a client acceptable?

Use a professional network to find a former manager. Many will still write a note.

Ask former colleagues and supervisors in a short message and give them a summary of the job you are applying for.