--- service: d.root-servers.net start-period: '2016-04-01T00:00:00Z' end-period: '2016-04-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4821870708 dns-udp-queries-received-ipv6: 601828611 dns-tcp-queries-received-ipv4: 36553601 dns-tcp-queries-received-ipv6: 556420 dns-udp-responses-sent-ipv4: 4796081172 dns-udp-responses-sent-ipv6: 601524786 dns-tcp-responses-sent-ipv4: 36504983 dns-tcp-responses-sent-ipv6: 556371