--- service: m.root-servers.net start-period: '2016-04-15T00:00:00Z' end-period: '2016-04-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2818800736 dns-udp-queries-received-ipv6: 248822340 dns-udp-responses-sent-ipv4: 2526309252 dns-udp-responses-sent-ipv6: 248536568 dns-tcp-queries-received-ipv4: 62200440 dns-tcp-queries-received-ipv6: 683208 dns-tcp-responses-sent-ipv4: 44636294 dns-tcp-responses-sent-ipv6: 562720