--- service: i.root-servers.net start-period: '2016-03-08T00:00:00Z' end-period: '2016-03-09T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5213396049 dns-udp-queries-received-ipv6: 425175708 dns-tcp-queries-received-ipv4: 22641080 dns-tcp-queries-received-ipv6: 1305471 dns-udp-responses-sent-ipv4: 5140168728 dns-udp-responses-sent-ipv6: 427526272 dns-tcp-responses-sent-ipv4: 22316015 dns-tcp-responses-sent-ipv6: 1306784