MAKERS OF ENEMIESLIST
hesketh.com loves the Internet. That’s why we work to make it better. Since its founding in 1995, hesketh.com has grown with the Internet -- the world's most powerful people connector. Our current contribution to making the Internet better is Enemieslist (EL). Trusted by data scientists, security experts, and anti-spam professionals, Enemieslist protects over 3.6 billion users from online abuse.
EL works by classifying hostnames (PTR records) in order to allow policy to be applied in various contexts.