--- service: a.root-servers.net start-period: '2014-07-20T00:00:00Z' end-period: '2014-07-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1431771640 dns-udp-queries-received-ipv6: 78436456 dns-tcp-queries-received-ipv4: 11686972 dns-tcp-queries-received-ipv6: 1147400 dns-udp-responses-sent-ipv4: 1431715624 dns-udp-responses-sent-ipv6: 78449858 dns-tcp-responses-sent-ipv4: 11848071 dns-tcp-responses-sent-ipv6: 493065