Maps with home-owner names

[Cristo Heatherdale]

So a couple of months ago I remember using a map for looking up vacant houses that I would find while "driving for dollars" when I used to be a wholesaler.  It was a phenomenal map, when zoomed in enough you could see the address of the properties in the area and who the current owner is on the map itself (whether it was an individual, bank, company, or trust) in addition to what you pull up on zillow, trulia, etc. when you click on it.  And this was nationwide in the United States only.  It made things easier than going on individual county assessor sites for every single property I would find.  Now for the life of me, a new computer and bookmarks that didn't save later, I can't find it anywhere.  Does anyone know what I'm talking about? Thanks in advance.