--- service: i.root-servers.net start-period: '2016-05-27T00:00:00Z' end-period: '2016-05-28T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6472451140 dns-udp-queries-received-ipv6: 462258826 dns-tcp-queries-received-ipv4: 23112025 dns-tcp-queries-received-ipv6: 806777 dns-udp-responses-sent-ipv4: 6425432275 dns-udp-responses-sent-ipv6: 470728611 dns-tcp-responses-sent-ipv4: 23414458 dns-tcp-responses-sent-ipv6: 809718