Yes, an attorney, a private investigator, someone with access to the records can check. In SOME areas this is public information.
I don't understand why you care who owned a house 25 years ago, though. If your mother had a support order and he did not pay, then she is entitled to take action against him.
If she did NOT because she felt it was a waste of time (or something), it's too late to file a claim now.
In some States someone overseas does NOT have to be personally served with a request for child support.