--- service: i.root-servers.net start-period: '2014-05-15T00:00:00Z' end-period: '2014-05-16T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2764684820 dns-udp-queries-received-ipv6: 196213924 dns-tcp-queries-received-ipv4: 6609685 dns-tcp-queries-received-ipv6: 240586 dns-udp-responses-sent-ipv4: 2707522750 dns-udp-responses-sent-ipv6: 199838610 dns-tcp-responses-sent-ipv4: 6664047 dns-tcp-responses-sent-ipv6: 241500