--- service: d.root-servers.net start-period: '2015-10-28T00:00:00Z' end-period: '2015-10-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3420920598 dns-udp-queries-received-ipv6: 447394851 dns-tcp-queries-received-ipv4: 19268132 dns-tcp-queries-received-ipv6: 628862 dns-udp-responses-sent-ipv4: 3408669332 dns-udp-responses-sent-ipv6: 446968033 dns-tcp-responses-sent-ipv4: 19203859 dns-tcp-responses-sent-ipv6: 628352