--- service: i.root-servers.net start-period: '2013-06-08T00:00:00Z' end-period: '2013-06-08T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1925785133 dns-udp-queries-received-ipv6: 96085102 dns-tcp-queries-received-ipv4: 3089092 dns-tcp-queries-received-ipv6: 138197 dns-udp-responses-sent-ipv4: 1925546562 dns-udp-responses-sent-ipv6: 102313930 dns-tcp-responses-sent-ipv4: 3223925 dns-tcp-responses-sent-ipv6: 141311