--- service: i.root-servers.net start-period: '2014-12-27T00:00:00Z' end-period: '2014-12-28T00:00:11Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2583820438 dns-udp-queries-received-ipv6: 204030363 dns-tcp-queries-received-ipv4: 6973341 dns-tcp-queries-received-ipv6: 202245 dns-udp-responses-sent-ipv4: 2566959329 dns-udp-responses-sent-ipv6: 203983744 dns-tcp-responses-sent-ipv4: 7141879 dns-tcp-responses-sent-ipv6: 205426