--- version: rssac002v3 service: j.root-servers.net start-period: '2019-01-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6030338686 dns-udp-queries-received-ipv6: 877083063 dns-tcp-queries-received-ipv4: 437394514 dns-tcp-queries-received-ipv6: 73370488 dns-udp-responses-sent-ipv4: 5651870194 dns-udp-responses-sent-ipv6: 829454473 dns-tcp-responses-sent-ipv4: 283216659 dns-tcp-responses-sent-ipv6: 48376668