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 2,175,994 websites that are Facebook Domain Verification Customers. We know of 1,365,323 live websites using Facebook Domain Verification and an additional 810,671 sites that used Facebook Domain Verification historically and 570,784 websites in the United States.
Get a list of 2,175,994 websites using Facebook Domain Verification which includes location information, hosting data, contact details, 1,365,323 currently live websites and an additional 2,806,224 domains that redirect to sites in this list. 810,671 sites that used this technology previouslyand 570,784 websites in the United States currently using Facebook Domain Verification.
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