Domain Verification provides a way for you to claim ownership of your domain in Facebook Business Manager.
https://developers.facebook.com/docs/sharing/domain-verification/
Frameworks
Get access to data on 2,322,675 websites that are Facebook Domain Verification Customers. We know of 1,333,656 live websites using Facebook Domain Verification and an additional 989,019 sites that used Facebook Domain Verification historically and 560,181 websites in the United States.
Get a list of 2,322,675 websites using Facebook Domain Verification which includes location information, hosting data, contact details, 1,333,656 currently live websites and an additional 2,750,008 domains that redirect to sites in this list. 989,019 sites that used this technology previouslyand 560,181 websites in the United States currently using Facebook Domain Verification.
Countries
Financial
Group
Region