--- service: a.root-servers.net start-period: '2016-12-13T00:00:00Z' end-period: '2016-12-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5065473907 dns-udp-queries-received-ipv6: 515923270 dns-tcp-queries-received-ipv4: 227617337 dns-tcp-queries-received-ipv6: 8468692 dns-udp-responses-sent-ipv4: 5069422841 dns-udp-responses-sent-ipv6: 516631108 dns-tcp-responses-sent-ipv4: 227743667 dns-tcp-responses-sent-ipv6: 8403243