--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6864462681 dns-udp-queries-received-ipv6: 1261693704 dns-tcp-queries-received-ipv4: 129386963 dns-tcp-queries-received-ipv6: 30805835 dns-udp-responses-sent-ipv4: 6766282450 dns-udp-responses-sent-ipv6: 1267360750 dns-tcp-responses-sent-ipv4: 123979991 dns-tcp-responses-sent-ipv6: 29202598