--- version: rssac002v3 service: i.root-servers.net start-period: '2019-03-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7633021247 dns-udp-queries-received-ipv6: 1355539260 dns-tcp-queries-received-ipv4: 145698977 dns-tcp-queries-received-ipv6: 35488948 dns-udp-responses-sent-ipv4: 7696867492 dns-udp-responses-sent-ipv6: 1378743844 dns-tcp-responses-sent-ipv4: 140414457 dns-tcp-responses-sent-ipv6: 32567814