--- service: d.root-servers.net start-period: '2016-02-11T00:00:00Z' end-period: '2016-02-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4338220728 dns-udp-queries-received-ipv6: 422206082 dns-tcp-queries-received-ipv4: 19209237 dns-tcp-queries-received-ipv6: 599778 dns-udp-responses-sent-ipv4: 4326709938 dns-udp-responses-sent-ipv6: 422038226 dns-tcp-responses-sent-ipv4: 19199962 dns-tcp-responses-sent-ipv6: 599395