--- service: a.root-servers.net start-period: '2014-03-13T00:00:00Z' end-period: '2014-03-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2166938134 dns-udp-queries-received-ipv6: 87601927 dns-tcp-queries-received-ipv4: 10944659 dns-tcp-queries-received-ipv6: 1148527 dns-udp-responses-sent-ipv4: 2142058212 dns-udp-responses-sent-ipv6: 87570660 dns-tcp-responses-sent-ipv4: 11005361 dns-tcp-responses-sent-ipv6: 107