--- service: a.root-servers.net start-period: '2014-12-23T00:00:00Z' end-period: '2014-12-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2626772188 dns-udp-queries-received-ipv6: 202640943 dns-tcp-queries-received-ipv4: 15454764 dns-tcp-queries-received-ipv6: 2493184 dns-udp-responses-sent-ipv4: 2626194095 dns-udp-responses-sent-ipv6: 202588486 dns-tcp-responses-sent-ipv4: 14206990 dns-tcp-responses-sent-ipv6: 1595524