--- service: a.root-servers.net start-period: '2014-04-16T00:00:00Z' end-period: '2014-04-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3133187884 dns-udp-queries-received-ipv6: 99154329 dns-tcp-queries-received-ipv4: 15249094 dns-tcp-queries-received-ipv6: 1392866 dns-udp-responses-sent-ipv4: 3132477841 dns-udp-responses-sent-ipv6: 99095350 dns-tcp-responses-sent-ipv4: 15300545 dns-tcp-responses-sent-ipv6: 114