--- service: i.root-servers.net start-period: '2016-02-09T00:00:00Z' end-period: '2016-02-10T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4674608906 dns-udp-queries-received-ipv6: 388890760 dns-tcp-queries-received-ipv4: 25378859 dns-tcp-queries-received-ipv6: 909041 dns-udp-responses-sent-ipv4: 4632473961 dns-udp-responses-sent-ipv6: 392555407 dns-tcp-responses-sent-ipv4: 25277019 dns-tcp-responses-sent-ipv6: 912612