What do I put on my job application for supervisors phone number when the place went out of business?

My job application wants my past supervisors phone number, but the place went out of business and the number is no longer valid. What do I write in the space on the application? Should I just put the old phone number and let the people figure it out when they try to call it?|||Write %26quot;no longer in business%26quot; or the more succinct %26quot;company closed.%26quot;