--- service: i.root-servers.net start-period: '2016-04-11T00:00:00Z' end-period: '2016-04-12T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5201272803 dns-udp-queries-received-ipv6: 425554751 dns-tcp-queries-received-ipv4: 28355066 dns-tcp-queries-received-ipv6: 834451 dns-udp-responses-sent-ipv4: 5115525685 dns-udp-responses-sent-ipv6: 425075818 dns-tcp-responses-sent-ipv4: 27529459 dns-tcp-responses-sent-ipv6: 840698