--- service: a.root-servers.net start-period: '2016-04-10T00:00:00Z' end-period: '2016-04-10T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4889094421 dns-udp-queries-received-ipv6: 320893931 dns-tcp-queries-received-ipv4: 79772938 dns-tcp-queries-received-ipv6: 2917098 dns-udp-responses-sent-ipv4: 4891106892 dns-udp-responses-sent-ipv6: 320703221 dns-tcp-responses-sent-ipv4: 60203688 dns-tcp-responses-sent-ipv6: 280631