--- service: i.root-servers.net start-period: '2014-05-04T00:00:00Z' end-period: '2014-05-05T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2340619198 dns-udp-queries-received-ipv6: 174338858 dns-tcp-queries-received-ipv4: 5088168 dns-tcp-queries-received-ipv6: 235645 dns-udp-responses-sent-ipv4: 2292699795 dns-udp-responses-sent-ipv6: 177050606 dns-tcp-responses-sent-ipv4: 5097987 dns-tcp-responses-sent-ipv6: 235894