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 2,356,748 websites that are Facebook Domain Verification Customers. We know of 1,195,343 live websites using Facebook Domain Verification and an additional 1,161,405 sites that used Facebook Domain Verification historically and 499,534 websites in the United States.
Get a list of 2,356,748 websites using Facebook Domain Verification which includes location information, hosting data, contact details, 1,195,343 currently live websites and an additional 2,743,144 domains that redirect to sites in this list. 1,161,405 sites that used this technology previouslyand 499,534 websites in the United States currently using Facebook Domain Verification.
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