--- service: i.root-servers.net start-period: '2015-11-22T00:00:00Z' end-period: '2015-11-23T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4092092648 dns-udp-queries-received-ipv6: 318755555 dns-tcp-queries-received-ipv4: 30264100 dns-tcp-queries-received-ipv6: 739529 dns-udp-responses-sent-ipv4: 4045812586 dns-udp-responses-sent-ipv6: 323650461 dns-tcp-responses-sent-ipv4: 29965147 dns-tcp-responses-sent-ipv6: 743449