bind/named.root.key

trust-anchors {
        # ROOT KEYS: See https://data.iana.org/root-anchors/root-anchors.xml
        # for current trust anchor information.
        #
        # This key (20326) was published in the root zone in 2017.
        # Servers which were already using the old key (19036) should
        # roll seamlessly to this new one via RFC 5011 rollover. Servers
        # being set up for the first time can use the contents of this
        # file as initializing keys; thereafter, the keys in the
        # managed key database will be trusted and maintained
        # automatically.
        . initial-ds 20326 8 2 "E06D44B80B8F1D39A95C0B0D7C65D08458E880409BBC683457104237C7F8EC8D";
};