--- service: a.root-servers.net start-period: '2016-03-11T00:00:00Z' end-period: '2016-03-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4248612397 dns-udp-queries-received-ipv6: 378931763 dns-tcp-queries-received-ipv4: 29898267 dns-tcp-queries-received-ipv6: 4198138 dns-udp-responses-sent-ipv4: 4234122186 dns-udp-responses-sent-ipv6: 379875037 dns-tcp-responses-sent-ipv4: 25840474 dns-tcp-responses-sent-ipv6: 286596