--- service: a.root-servers.net start-period: '2015-06-10T00:00:00Z' end-period: '2015-06-10T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2879679693 dns-udp-queries-received-ipv6: 231187314 dns-tcp-queries-received-ipv4: 18372462 dns-tcp-queries-received-ipv6: 8478756 dns-udp-responses-sent-ipv4: 2908052674 dns-udp-responses-sent-ipv6: 233705169 dns-tcp-responses-sent-ipv4: 15686941 dns-tcp-responses-sent-ipv6: 6850350