--- service: i.root-servers.net start-period: '2014-09-13T00:00:00Z' end-period: '2014-09-14T00:00:10Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2801842730 dns-udp-queries-received-ipv6: 212240525 dns-tcp-queries-received-ipv4: 6545908 dns-tcp-queries-received-ipv6: 251167 dns-udp-responses-sent-ipv4: 2748907871 dns-udp-responses-sent-ipv6: 212200535 dns-tcp-responses-sent-ipv4: 6092099 dns-tcp-responses-sent-ipv6: 253096