--- service: d.root-servers.net start-period: '2015-11-17T00:00:00Z' end-period: '2015-11-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3803823010 dns-udp-queries-received-ipv6: 459959326 dns-tcp-queries-received-ipv4: 20695776 dns-tcp-queries-received-ipv6: 473915 dns-udp-responses-sent-ipv4: 3789760008 dns-udp-responses-sent-ipv6: 459666995 dns-tcp-responses-sent-ipv4: 20492824 dns-tcp-responses-sent-ipv6: 473606