How do websites like Propertyshark get updated Lis Pendens info?

[Eran Matalon]

Hi Guys, 

Im a Broker and work with many Pre-foreclosures in NY. Im wondering how these websites get all the E-filed documents for all the properties in the area in bulk? I need to look up the properties on Propertyshark and only than see the Lis Pendens, meaning i already need to know what addresses have one.  Is there anyway for me to be able to see all the new Lis Pendens that are filed in NY without using these 3rd party websites? Instead of using Ecourts and inserting the index number, i'm wondering if i can do the opposite and see all the info for all the new properties.

Long story short, I want to get the info the other websites get.