This site maintains a record of adult material.
https://www.law.cornell.edu/uscode/18/usc_sec_18_00002257----000-.html
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Get access to data on 152,245 websites that are Title 18, USC 2257 Customers. We know of 87,689 live websites using Title 18, USC 2257 and an additional 64,556 sites that used Title 18, USC 2257 historically and 55,049 websites in the United States.
Get a list of 152,245 websites using Title 18, USC 2257 which includes location information, hosting data, contact details, 87,689 currently live websites and an additional 118,599 domains that redirect to sites in this list. 64,556 sites that used this technology previously and 55,049 websites in the United States currently using Title 18, USC 2257.
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