--- service: i.root-servers.net start-period: '2014-07-15T00:00:00Z' end-period: '2014-07-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2284850388 dns-udp-queries-received-ipv6: 168258026 dns-tcp-queries-received-ipv4: 6875360 dns-tcp-queries-received-ipv6: 277931 dns-udp-responses-sent-ipv4: 2244930611 dns-udp-responses-sent-ipv6: 167933182 dns-tcp-responses-sent-ipv4: 6666997 dns-tcp-responses-sent-ipv6: 276004