I wouldn't be surprised if it this is powered by Clearbit. A lot of companies seem to be reselling the data bought from Clearbit.

Intercom uses another company for their data too: https://docs.intercom.io/help-and-faqs/your-users-data-in-in...

It seems like this market became saturated in just the past couple of years with clearbit, and even intercom providing this for free. Used to be a real need but afraid OP might be a little late in releasing this.

Curious about this as well