--- service: a.root-servers.net start-period: '2016-03-09T00:00:00Z' end-period: '2016-03-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4388486332 dns-udp-queries-received-ipv6: 368527286 dns-tcp-queries-received-ipv4: 32168613 dns-tcp-queries-received-ipv6: 4215084 dns-udp-responses-sent-ipv4: 4371306634 dns-udp-responses-sent-ipv6: 369418957 dns-tcp-responses-sent-ipv4: 27984353 dns-tcp-responses-sent-ipv6: 353940