--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5267050456 dns-udp-queries-received-ipv6: 935177005 dns-tcp-queries-received-ipv4: 490435669 dns-tcp-queries-received-ipv6: 111283294 dns-udp-responses-sent-ipv4: 4580470652 dns-udp-responses-sent-ipv6: 920346074 dns-tcp-responses-sent-ipv4: 415243013 dns-tcp-responses-sent-ipv6: 105294171