--- service: a.root-servers.net start-period: '2014-06-21T00:00:00Z' end-period: '2014-06-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1403543957 dns-udp-queries-received-ipv6: 104575588 dns-tcp-queries-received-ipv4: 8475685 dns-tcp-queries-received-ipv6: 798228 dns-udp-responses-sent-ipv4: 1403329931 dns-udp-responses-sent-ipv6: 104582080 dns-tcp-responses-sent-ipv4: 8431568 dns-tcp-responses-sent-ipv6: 485173