--- service: i.root-servers.net start-period: '2014-07-08T00:00:00Z' end-period: '2014-07-09T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3349547653 dns-udp-queries-received-ipv6: 227005776 dns-tcp-queries-received-ipv4: 6579030 dns-tcp-queries-received-ipv6: 268254 dns-udp-responses-sent-ipv4: 3293892355 dns-udp-responses-sent-ipv6: 231144195 dns-tcp-responses-sent-ipv4: 6816550 dns-tcp-responses-sent-ipv6: 271565