--- service: a.root-servers.net start-period: '2014-01-16T00:00:00Z' end-period: '2014-01-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1373116660 dns-udp-queries-received-ipv6: 44643649 dns-tcp-queries-received-ipv4: 7541560 dns-tcp-queries-received-ipv6: 1096326 dns-udp-responses-sent-ipv4: 1371209963 dns-udp-responses-sent-ipv6: 44640361 dns-tcp-responses-sent-ipv4: 7526319 dns-tcp-responses-sent-ipv6: 56