--- service: i.root-servers.net start-period: '2015-05-03T00:00:00Z' end-period: '2015-05-04T00:00:10Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3080419998 dns-udp-queries-received-ipv6: 232748951 dns-tcp-queries-received-ipv4: 9224412 dns-tcp-queries-received-ipv6: 256259 dns-udp-responses-sent-ipv4: 3031622125 dns-udp-responses-sent-ipv6: 235180712 dns-tcp-responses-sent-ipv4: 9315392 dns-tcp-responses-sent-ipv6: 263269