--- service: i.root-servers.net start-period: '2015-07-25T00:00:00Z' end-period: '2015-07-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4646518344 dns-udp-queries-received-ipv6: 213477449 dns-tcp-queries-received-ipv4: 13045922 dns-tcp-queries-received-ipv6: 265872 dns-udp-responses-sent-ipv4: 4607041346 dns-udp-responses-sent-ipv6: 217580711 dns-tcp-responses-sent-ipv4: 13049156 dns-tcp-responses-sent-ipv6: 270934