--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5149516795 dns-udp-queries-received-ipv6: 936997115 dns-tcp-queries-received-ipv4: 482387290 dns-tcp-queries-received-ipv6: 113234341 dns-udp-responses-sent-ipv4: 4460853772 dns-udp-responses-sent-ipv6: 913627818 dns-tcp-responses-sent-ipv4: 411234431 dns-tcp-responses-sent-ipv6: 106241066