--- service: i.root-servers.net start-period: '2013-08-07T00:00:00Z' end-period: '2013-08-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2175738337 dns-udp-queries-received-ipv6: 150883211 dns-tcp-queries-received-ipv4: 5493026 dns-tcp-queries-received-ipv6: 236712 dns-udp-responses-sent-ipv4: 2107721354 dns-udp-responses-sent-ipv6: 150852930 dns-tcp-responses-sent-ipv4: 4951003 dns-tcp-responses-sent-ipv6: 218814