HEre is a list of a few of them.Please note I am not affiliated in any way with any of the groups other than that I have attended some of their meetings/presentations.

She works nationwide and I have no affiliation with her other than knowing she's an amazing asset to helping you narrow down your strategy. 

I have no affiliation. 

“This data may not be sold or shown to any party not affiliated with the original contract."

I have no affiliation with Holton - wise  however I will say..

And I am not affiliated with him in any way...I am practicing gratefulness today and thought of him and wanted to put the word out there.

I have no affiliation with them.

You will have to become active and join a firm (affiliate) where you'll have oversight, and if you want keys to the kingdom so to speak, you'll have to subscribe to your NAR MLS, perhaps your commercial board, and all the memberships your firm requires. 

If not you can go to the office and search OR order a title report on it from a source like protitleusa.com (note not affiliated with them, we do use them to order our reports)

Affiliates with NARPM (National Association of Residential Property Managers) see if there is a local chapter in your area3.