--- service: a.root-servers.net start-period: '2015-09-03T00:00:00Z' end-period: '2015-09-03T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4759500970 dns-udp-queries-received-ipv6: 272901167 dns-tcp-queries-received-ipv4: 19399367 dns-tcp-queries-received-ipv6: 10802498 dns-udp-responses-sent-ipv4: 4787348960 dns-udp-responses-sent-ipv6: 275065140 dns-tcp-responses-sent-ipv4: 17191914 dns-tcp-responses-sent-ipv6: 8960179