--- service: i.root-servers.net start-period: '2013-07-02T00:00:00Z' end-period: '2013-07-03T00:00:40Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2116093407 dns-udp-queries-received-ipv6: 121310060 dns-tcp-queries-received-ipv4: 3189365 dns-tcp-queries-received-ipv6: 151186 dns-udp-responses-sent-ipv4: 2123727564 dns-udp-responses-sent-ipv6: 128832317 dns-tcp-responses-sent-ipv4: 3482184 dns-tcp-responses-sent-ipv6: 153657