--- service: i.root-servers.net start-period: '2014-03-10T00:00:00Z' end-period: '2014-03-11T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2590932520 dns-udp-queries-received-ipv6: 177853596 dns-tcp-queries-received-ipv4: 5480513 dns-tcp-queries-received-ipv6: 301683 dns-udp-responses-sent-ipv4: 2535571067 dns-udp-responses-sent-ipv6: 177954030 dns-tcp-responses-sent-ipv4: 5489526 dns-tcp-responses-sent-ipv6: 303848