The IP addresses of mobile operators are used by millions of people via mobile phones, tablets and modems, but they have few addresses, because... The IPv4 protocol has long exhausted its resources. In this regard, hundreds of thousands of people can access one such mobile IP at the same time, so resources such as Vkontakte, Odnoklassniki, Facebook, Google, Yandex, Instagram, Avito, YouTube, Auto.ru, Badoo, Mail.ru, Rambler.ru, Viber , WhatsApp, Telegram - treat such addresses with a high degree of trust because they do not want to block tens of thousands of innocent users.