--- service: a.root-servers.net start-period: '2014-05-11T00:00:00Z' end-period: '2014-05-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2185364046 dns-udp-queries-received-ipv6: 105804696 dns-tcp-queries-received-ipv4: 10267636 dns-tcp-queries-received-ipv6: 1185498 dns-udp-responses-sent-ipv4: 2184532394 dns-udp-responses-sent-ipv6: 105767624 dns-tcp-responses-sent-ipv4: 10276815 dns-tcp-responses-sent-ipv6: 108