--- service: i.root-servers.net start-period: '2014-04-26T00:00:00Z' end-period: '2014-04-27T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2278177642 dns-udp-queries-received-ipv6: 156828124 dns-tcp-queries-received-ipv4: 5199969 dns-tcp-queries-received-ipv6: 256373 dns-udp-responses-sent-ipv4: 2231231443 dns-udp-responses-sent-ipv6: 159621914 dns-tcp-responses-sent-ipv4: 5216717 dns-tcp-responses-sent-ipv6: 254831