how do i find out my landlord's homeowners insurance company.?

My landlord tried to fix the water heater less than a week before the house burnt down because of the faulty water heater.i will like to file a 3rd party claim against his homeowner's insurance company but i dont know who he insured with. His name is James Phifer addy is 812 9th st, ne washington dc 20002

Then ask him.

We don't know.