--- service: i.root-servers.net start-period: '2014-02-11T00:00:00Z' end-period: '2014-02-12T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3757515657 dns-udp-queries-received-ipv6: 219447304 dns-tcp-queries-received-ipv4: 7580179 dns-tcp-queries-received-ipv6: 758016 dns-udp-responses-sent-ipv4: 3666678164 dns-udp-responses-sent-ipv6: 219362850 dns-tcp-responses-sent-ipv4: 7541842 dns-tcp-responses-sent-ipv6: 738438