--- service: a.root-servers.net start-period: '2015-03-24T00:00:00Z' end-period: '2015-03-24T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2850535361 dns-udp-queries-received-ipv6: 236325666 dns-tcp-queries-received-ipv4: 20889708 dns-tcp-queries-received-ipv6: 2123091 dns-udp-responses-sent-ipv4: 2843610948 dns-udp-responses-sent-ipv6: 235968117 dns-tcp-responses-sent-ipv4: 17243314 dns-tcp-responses-sent-ipv6: 1228302