Hi! Co-creator of Optery here. This is a great question. There are hundreds of data brokers across different categories (e.g. people search, email, phone, aud

Hi! Co-creator of Optery here. This is a great question. There are hundreds of data brokers across different categories (e.g. people search, email, phone, audience marketing, geolocation, past purchases, TV viewing, etc). Many data brokers operate across categories. We've started off with the People Search Site category first because that's where we sensed the most pain from the users we spoke with. We are constantly expanding our coverage, and will be adding more data broker categories in the near future. ZoomInfo is high up on the list to be added soon because we get asked about them a lot.