--- service: a.root-servers.net start-period: '2014-04-18T00:00:00Z' end-period: '2014-04-18T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2632723604 dns-udp-queries-received-ipv6: 86856448 dns-tcp-queries-received-ipv4: 11994815 dns-tcp-queries-received-ipv6: 1330621 dns-udp-responses-sent-ipv4: 2632018119 dns-udp-responses-sent-ipv6: 86741942 dns-tcp-responses-sent-ipv4: 11994807 dns-tcp-responses-sent-ipv6: 99