Internet Watch Foundation 2019 Report
More than 70% of all webpages identified as containing child sexual abuse images were found on .com and .net domains according to the 2019 report from The Internet Watch Foundation. None of the other 1200+ generic top-level domains accounted for more than 1%. Verisign has exclusive management over the .com and .net generic top-level domains.
Find this information on page 50.