--- service: i.root-servers.net start-period: '2014-03-16T00:00:00Z' end-period: '2014-03-17T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2241504348 dns-udp-queries-received-ipv6: 170090193 dns-tcp-queries-received-ipv4: 5041268 dns-tcp-queries-received-ipv6: 263559 dns-udp-responses-sent-ipv4: 2193271547 dns-udp-responses-sent-ipv6: 169788421 dns-tcp-responses-sent-ipv4: 5024681 dns-tcp-responses-sent-ipv6: 266871