--- service: i.root-servers.net start-period: '2013-07-08T00:00:00Z' end-period: '2013-07-09T00:01:38Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1383282701 dns-udp-queries-received-ipv6: 94638212 dns-tcp-queries-received-ipv4: 2077115 dns-tcp-queries-received-ipv6: 106202 dns-udp-responses-sent-ipv4: 1345279076 dns-udp-responses-sent-ipv6: 94615504 dns-tcp-responses-sent-ipv4: 2054286 dns-tcp-responses-sent-ipv6: 107057