--- service: i.root-servers.net start-period: '2016-04-29T00:00:00Z' end-period: '2016-04-30T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5448840023 dns-udp-queries-received-ipv6: 436608180 dns-tcp-queries-received-ipv4: 34190944 dns-tcp-queries-received-ipv6: 941928 dns-udp-responses-sent-ipv4: 5400707412 dns-udp-responses-sent-ipv6: 441849483 dns-tcp-responses-sent-ipv4: 34001531 dns-tcp-responses-sent-ipv6: 944588