--- service: i.root-servers.net start-period: '2016-02-28T00:00:00Z' end-period: '2016-02-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4474592279 dns-udp-queries-received-ipv6: 392055023 dns-tcp-queries-received-ipv4: 14212150 dns-tcp-queries-received-ipv6: 1120970 dns-udp-responses-sent-ipv4: 4409955768 dns-udp-responses-sent-ipv6: 391604670 dns-tcp-responses-sent-ipv4: 14049152 dns-tcp-responses-sent-ipv6: 1122341