How do you find a phone number to a abandon house

[James Mosby]

I have located several houses that are abandon, how do you go about getting the phone numbers. I have the address, I realize I can mail them a yellow card.

[Greg Scott]

It doesn't matter what number or how often you call, if it is an abandoned house, nobody will answer.

(Sorry James, seemed like a set-up waiting for a punchline.)

A serious answer is look at the public records for the owner and then pay a skip trace service to locate a phone number.