--- service: i.root-servers.net start-period: '2013-11-13T00:00:00Z' end-period: '2013-11-14T00:00:06Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2409960141 dns-udp-queries-received-ipv6: 124753541 dns-tcp-queries-received-ipv4: 5089385 dns-tcp-queries-received-ipv6: 237418 dns-udp-responses-sent-ipv4: 2489022114 dns-udp-responses-sent-ipv6: 138218892 dns-tcp-responses-sent-ipv4: 5114689 dns-tcp-responses-sent-ipv6: 246182