--- service: i.root-servers.net start-period: '2016-04-14T00:00:00Z' end-period: '2016-04-15T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5164871514 dns-udp-queries-received-ipv6: 445438697 dns-tcp-queries-received-ipv4: 28535161 dns-tcp-queries-received-ipv6: 945614 dns-udp-responses-sent-ipv4: 5090508120 dns-udp-responses-sent-ipv6: 444826773 dns-tcp-responses-sent-ipv4: 28088533 dns-tcp-responses-sent-ipv6: 949879