--- version: rssac002v3 service: j.root-servers.net start-period: '2019-04-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7510839285 dns-udp-queries-received-ipv6: 1088966858 dns-tcp-queries-received-ipv4: 561641034 dns-tcp-queries-received-ipv6: 63745062 dns-udp-responses-sent-ipv4: 6997066855 dns-udp-responses-sent-ipv6: 1054065015 dns-tcp-responses-sent-ipv4: 421279549 dns-tcp-responses-sent-ipv6: 48514149