--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6445360611 dns-udp-queries-received-ipv6: 1279176127 dns-tcp-queries-received-ipv4: 120625841 dns-tcp-queries-received-ipv6: 29926725 dns-udp-responses-sent-ipv4: 6294597968 dns-udp-responses-sent-ipv6: 1292329214 dns-tcp-responses-sent-ipv4: 116068214 dns-tcp-responses-sent-ipv6: 28584832