--- service: i.root-servers.net start-period: '2014-06-02T00:00:00Z' end-period: '2014-06-03T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2756971804 dns-udp-queries-received-ipv6: 243579780 dns-tcp-queries-received-ipv4: 6170508 dns-tcp-queries-received-ipv6: 244435 dns-udp-responses-sent-ipv4: 2697306734 dns-udp-responses-sent-ipv6: 243247719 dns-tcp-responses-sent-ipv4: 6368264 dns-tcp-responses-sent-ipv6: 246337