--- version: rssac002v3 service: j.root-servers.net start-period: '2019-01-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6418552984 dns-udp-queries-received-ipv6: 892827329 dns-tcp-queries-received-ipv4: 459722155 dns-tcp-queries-received-ipv6: 71358369 dns-udp-responses-sent-ipv4: 5911199053 dns-udp-responses-sent-ipv6: 848513326 dns-tcp-responses-sent-ipv4: 293137102 dns-tcp-responses-sent-ipv6: 47039382