--- service: j.root-servers.net start-period: '2016-03-21T00:00:00Z' end-period: '2016-03-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6037355648 dns-udp-queries-received-ipv6: 700513007 dns-tcp-queries-received-ipv4: 163464779 dns-tcp-queries-received-ipv6: 4138174 dns-udp-responses-sent-ipv4: 5731395455 dns-udp-responses-sent-ipv6: 751073823 dns-tcp-responses-sent-ipv4: 147564564 dns-tcp-responses-sent-ipv6: 309381