--- service: i.root-servers.net start-period: '2016-03-11T00:00:00Z' end-period: '2016-03-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5113980904 dns-udp-queries-received-ipv6: 423483128 dns-tcp-queries-received-ipv4: 26751953 dns-tcp-queries-received-ipv6: 1209052 dns-udp-responses-sent-ipv4: 5027404735 dns-udp-responses-sent-ipv6: 427804914 dns-tcp-responses-sent-ipv4: 26548630 dns-tcp-responses-sent-ipv6: 1211273