--- service: j.root-servers.net start-period: '2016-03-19T00:00:00Z' end-period: '2016-03-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5679958973 dns-udp-queries-received-ipv6: 665988557 dns-tcp-queries-received-ipv4: 168226540 dns-tcp-queries-received-ipv6: 3649872 dns-udp-responses-sent-ipv4: 5393045384 dns-udp-responses-sent-ipv6: 716059073 dns-tcp-responses-sent-ipv4: 148169484 dns-tcp-responses-sent-ipv6: 317519