--- service: i.root-servers.net start-period: '2014-07-22T00:00:00Z' end-period: '2014-07-23T00:00:10Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3303619944 dns-udp-queries-received-ipv6: 259974509 dns-tcp-queries-received-ipv4: 7175405 dns-tcp-queries-received-ipv6: 262761 dns-udp-responses-sent-ipv4: 3235036144 dns-udp-responses-sent-ipv6: 257794008 dns-tcp-responses-sent-ipv4: 7262477 dns-tcp-responses-sent-ipv6: 266281