--- service: i.root-servers.net start-period: '2014-04-28T00:00:00Z' end-period: '2014-04-29T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2986595846 dns-udp-queries-received-ipv6: 180896685 dns-tcp-queries-received-ipv4: 5758936 dns-tcp-queries-received-ipv6: 277577 dns-udp-responses-sent-ipv4: 2929596321 dns-udp-responses-sent-ipv6: 183919730 dns-tcp-responses-sent-ipv4: 5778522 dns-tcp-responses-sent-ipv6: 275841