--- service: a.root-servers.net start-period: '2016-06-25T00:00:00Z' end-period: '2016-06-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4187291561 dns-udp-queries-received-ipv6: 393122037 dns-tcp-queries-received-ipv4: 1179164783 dns-tcp-queries-received-ipv6: 8286340 dns-udp-responses-sent-ipv4: 4177514105 dns-udp-responses-sent-ipv6: 391351342 dns-tcp-responses-sent-ipv4: 56065054 dns-tcp-responses-sent-ipv6: 1903689