--- service: i.root-servers.net start-period: '2016-03-09T00:00:00Z' end-period: '2016-03-10T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5222967881 dns-udp-queries-received-ipv6: 439948154 dns-tcp-queries-received-ipv4: 22162856 dns-tcp-queries-received-ipv6: 1327170 dns-udp-responses-sent-ipv4: 5149556643 dns-udp-responses-sent-ipv6: 443988620 dns-tcp-responses-sent-ipv4: 21982382 dns-tcp-responses-sent-ipv6: 1327431