--- service: a.root-servers.net start-period: '2014-03-20T00:00:00Z' end-period: '2014-03-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2317430726 dns-udp-queries-received-ipv6: 89202316 dns-tcp-queries-received-ipv4: 11683888 dns-tcp-queries-received-ipv6: 1188905 dns-udp-responses-sent-ipv4: 2291225814 dns-udp-responses-sent-ipv6: 89169592 dns-tcp-responses-sent-ipv4: 11763858 dns-tcp-responses-sent-ipv6: 121