--- service: i.root-servers.net start-period: '2015-06-08T00:00:00Z' end-period: '2015-06-08T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3753745672 dns-udp-queries-received-ipv6: 253344849 dns-tcp-queries-received-ipv4: 12403763 dns-tcp-queries-received-ipv6: 292309 dns-udp-responses-sent-ipv4: 3691036634 dns-udp-responses-sent-ipv6: 257951843 dns-tcp-responses-sent-ipv4: 12480877 dns-tcp-responses-sent-ipv6: 297012