--- service: i.root-servers.net start-period: '2014-04-15T00:00:00Z' end-period: '2014-04-16T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3252847738 dns-udp-queries-received-ipv6: 185654700 dns-tcp-queries-received-ipv4: 6681148 dns-tcp-queries-received-ipv6: 254732 dns-udp-responses-sent-ipv4: 3190087749 dns-udp-responses-sent-ipv6: 185805899 dns-tcp-responses-sent-ipv4: 6681978 dns-tcp-responses-sent-ipv6: 256666