--- service: i.root-servers.net start-period: '2014-09-19T00:00:00Z' end-period: '2014-09-20T00:00:07Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3069211586 dns-udp-queries-received-ipv6: 212789464 dns-tcp-queries-received-ipv4: 7278447 dns-tcp-queries-received-ipv6: 159086 dns-udp-responses-sent-ipv4: 3015242615 dns-udp-responses-sent-ipv6: 216780916 dns-tcp-responses-sent-ipv4: 6880089 dns-tcp-responses-sent-ipv6: 159072