--- service: a.root-servers.net start-period: '2015-07-03T00:00:00Z' end-period: '2015-07-03T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3471080740 dns-udp-queries-received-ipv6: 291127487 dns-tcp-queries-received-ipv4: 24598782 dns-tcp-queries-received-ipv6: 10231479 dns-udp-responses-sent-ipv4: 3500659992 dns-udp-responses-sent-ipv6: 293076491 dns-tcp-responses-sent-ipv4: 20935358 dns-tcp-responses-sent-ipv6: 8554261