--- service: a.root-servers.net start-period: '2016-11-15T00:00:00Z' end-period: '2016-11-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4965036880 dns-udp-queries-received-ipv6: 418954085 dns-tcp-queries-received-ipv4: 174628024 dns-tcp-queries-received-ipv6: 8574758 dns-udp-responses-sent-ipv4: 4946180493 dns-udp-responses-sent-ipv6: 418825602 dns-tcp-responses-sent-ipv4: 169882759 dns-tcp-responses-sent-ipv6: 8608655