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 2,286,623 websites that are Facebook Domain Verification Customers. We know of 1,337,058 live websites using Facebook Domain Verification and an additional 949,565 sites that used Facebook Domain Verification historically and 561,464 websites in the United States.
Get a list of 2,286,623 websites using Facebook Domain Verification which includes location information, hosting data, contact details, 1,337,058 currently live websites and an additional 2,740,012 domains that redirect to sites in this list. 949,565 sites that used this technology previouslyand 561,464 websites in the United States currently using Facebook Domain Verification.
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