--- service: a.root-servers.net start-period: '2014-12-24T00:00:00Z' end-period: '2014-12-24T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2311595881 dns-udp-queries-received-ipv6: 186534239 dns-tcp-queries-received-ipv4: 13988954 dns-tcp-queries-received-ipv6: 2436972 dns-udp-responses-sent-ipv4: 2311576248 dns-udp-responses-sent-ipv6: 186524522 dns-tcp-responses-sent-ipv4: 12945415 dns-tcp-responses-sent-ipv6: 1574578