--- service: i.root-servers.net start-period: '2015-03-29T00:00:00Z' end-period: '2015-03-30T00:00:07Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2839497170 dns-udp-queries-received-ipv6: 213640008 dns-tcp-queries-received-ipv4: 6998702 dns-tcp-queries-received-ipv6: 228631 dns-udp-responses-sent-ipv4: 2797725299 dns-udp-responses-sent-ipv6: 216472842 dns-tcp-responses-sent-ipv4: 7026868 dns-tcp-responses-sent-ipv6: 234786