--- service: d.root-servers.net start-period: '2016-04-27T00:00:00Z' end-period: '2016-04-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4653272606 dns-udp-queries-received-ipv6: 619153285 dns-tcp-queries-received-ipv4: 39133170 dns-tcp-queries-received-ipv6: 640954 dns-udp-responses-sent-ipv4: 4634666493 dns-udp-responses-sent-ipv6: 618929947 dns-tcp-responses-sent-ipv4: 39027598 dns-tcp-responses-sent-ipv6: 640739