--- service: d.root-servers.net start-period: '2016-04-09T00:00:00Z' end-period: '2016-04-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4363260467 dns-udp-queries-received-ipv6: 587446733 dns-tcp-queries-received-ipv4: 42206600 dns-tcp-queries-received-ipv6: 532812 dns-udp-responses-sent-ipv4: 4349844819 dns-udp-responses-sent-ipv6: 587187895 dns-tcp-responses-sent-ipv4: 42129029 dns-tcp-responses-sent-ipv6: 532799