--- service: d.root-servers.net start-period: '2016-02-13T00:00:00Z' end-period: '2016-02-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3948905562 dns-udp-queries-received-ipv6: 410457531 dns-tcp-queries-received-ipv4: 19344914 dns-tcp-queries-received-ipv6: 554515 dns-udp-responses-sent-ipv4: 3938672539 dns-udp-responses-sent-ipv6: 410213776 dns-tcp-responses-sent-ipv4: 19314281 dns-tcp-responses-sent-ipv6: 554262