v2 of the Google reCAPTCHA system.
https://developers.google.com/recaptcha/docs/display
Widgets
Get access to data on 7,197,451 websites that are reCAPTCHA v2 Customers. We know of 2,992,688 live websites using reCAPTCHA v2 and an additional 4,204,763 sites that used reCAPTCHA v2 historically and 1,470,192 websites in the United States.
Get a list of 7,197,451 websites using reCAPTCHA v2 which includes location information, hosting data, contact details, 2,992,688 currently live websites and an additional 3,510,064 domains that redirect to sites in this list. 4,204,763 sites that used this technology previously and 1,470,192 websites in the United States currently using reCAPTCHA v2.
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