--- version: rssac002v3 service: i.root-servers.net start-period: '2018-04-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4737722250 dns-udp-queries-received-ipv6: 701912832 dns-tcp-queries-received-ipv4: 123458430 dns-tcp-queries-received-ipv6: 13597402 dns-udp-responses-sent-ipv4: 4723246652 dns-udp-responses-sent-ipv6: 697903113 dns-tcp-responses-sent-ipv4: 122442725 dns-tcp-responses-sent-ipv6: 13614086