--- service: i.root-servers.net start-period: '2013-05-16T00:00:00Z' end-period: '2013-05-17T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2179045700 dns-udp-queries-received-ipv6: 106655555 dns-tcp-queries-received-ipv4: 3113450 dns-tcp-queries-received-ipv6: 141031 dns-udp-responses-sent-ipv4: 2183603524 dns-udp-responses-sent-ipv6: 113850756 dns-tcp-responses-sent-ipv4: 3240575 dns-tcp-responses-sent-ipv6: 142106