--- service: i.root-servers.net start-period: '2014-05-19T00:00:00Z' end-period: '2014-05-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2890703824 dns-udp-queries-received-ipv6: 233339322 dns-tcp-queries-received-ipv4: 6582344 dns-tcp-queries-received-ipv6: 231246 dns-udp-responses-sent-ipv4: 2833043020 dns-udp-responses-sent-ipv6: 236706071 dns-tcp-responses-sent-ipv4: 6621562 dns-tcp-responses-sent-ipv6: 234725