--- service: i.root-servers.net start-period: '2016-01-29T00:00:00Z' end-period: '2016-01-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4956857386 dns-udp-queries-received-ipv6: 407607788 dns-tcp-queries-received-ipv4: 17457051 dns-tcp-queries-received-ipv6: 849296 dns-udp-responses-sent-ipv4: 4891683644 dns-udp-responses-sent-ipv6: 411339956 dns-tcp-responses-sent-ipv4: 17434043 dns-tcp-responses-sent-ipv6: 853276