Yandex services worked for quite a long time using the DNS whitelisting mechanism in the manner of
RFC6589 . For this, the DNS view tools in BIND were used. Providers with direct connection with Yandex (as path is 1) and IPv6 prefixes announcing to us fell into the white list. I even
talked about this at one of the YaC conferences. At the same time, of course, this construction did not bring great joy, even though the white list was updated automatically, it was still inconvenient with it: it seems, the service is there, and it seems that
people cannot get to it .
Therefore, recently we gathered our courage and removed the DNS view for services operating in the yandex.com zone - Search, Maps, Mail and Passport.
And today,
quietly and quietly removed from the DNS view
ya.ru.