--- service: i.root-servers.net start-period: '2015-05-14T00:00:00Z' end-period: '2015-05-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6293667584 dns-udp-queries-received-ipv6: 379722219 dns-tcp-queries-received-ipv4: 33120137 dns-tcp-queries-received-ipv6: 1010678 dns-udp-responses-sent-ipv4: 6210947140 dns-udp-responses-sent-ipv6: 382763551 dns-tcp-responses-sent-ipv4: 32546157 dns-tcp-responses-sent-ipv6: 971811