--- service: a.root-servers.net start-period: '2013-11-23T00:00:00Z' end-period: '2013-11-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1267935792 dns-udp-queries-received-ipv6: 79705934 dns-tcp-queries-received-ipv4: 6893077 dns-tcp-queries-received-ipv6: 1286063 dns-udp-responses-sent-ipv4: 1265633722 dns-udp-responses-sent-ipv6: 79716828 dns-tcp-responses-sent-ipv4: 7457340 dns-tcp-responses-sent-ipv6: 167