--- service: i.root-servers.net start-period: '2013-05-30T00:00:00Z' end-period: '2013-05-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2170523860 dns-udp-queries-received-ipv6: 110087104 dns-tcp-queries-received-ipv4: 3713112 dns-tcp-queries-received-ipv6: 130434 dns-udp-responses-sent-ipv4: 2176030700 dns-udp-responses-sent-ipv6: 116871297 dns-tcp-responses-sent-ipv4: 3835156 dns-tcp-responses-sent-ipv6: 131124