--- service: d.root-servers.net start-period: '2015-11-25T00:00:00Z' end-period: '2015-11-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3711901831 dns-udp-queries-received-ipv6: 396948218 dns-tcp-queries-received-ipv4: 17837619 dns-tcp-queries-received-ipv6: 489092 dns-udp-responses-sent-ipv4: 3693523460 dns-udp-responses-sent-ipv6: 396656822 dns-tcp-responses-sent-ipv4: 17810107 dns-tcp-responses-sent-ipv6: 488744