--- service: i.root-servers.net start-period: '2015-11-29T00:00:00Z' end-period: '2015-11-30T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4240438315 dns-udp-queries-received-ipv6: 316996840 dns-tcp-queries-received-ipv4: 25746745 dns-tcp-queries-received-ipv6: 721771 dns-udp-responses-sent-ipv4: 4199125492 dns-udp-responses-sent-ipv6: 319703267 dns-tcp-responses-sent-ipv4: 25700830 dns-tcp-responses-sent-ipv6: 724225