--- service: a.root-servers.net start-period: '2015-11-15T00:00:00Z' end-period: '2015-11-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3458511106 dns-udp-queries-received-ipv6: 285768055 dns-tcp-queries-received-ipv4: 17109158 dns-tcp-queries-received-ipv6: 1758666 dns-udp-responses-sent-ipv4: 3451316298 dns-udp-responses-sent-ipv6: 285369492 dns-tcp-responses-sent-ipv4: 15004347 dns-tcp-responses-sent-ipv6: 262090