In order to determine who is the current beneficiary of a life insurance policy you would need to check with the life insurance company.
The insurance company will release this information about the current beneficiary to the owner of the life insurance policy, or his/her representative.
Your life insurance agent or broker should be able to assist you.
You can either contact the life insurance company by phone, or written request, or call your life insurance agent for further assistance in determine the beneficiary of a life insurance policy.