--- service: i.root-servers.net start-period: '2013-07-30T00:00:00Z' end-period: '2013-07-31T00:00:26Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2228712205 dns-udp-queries-received-ipv6: 152646144 dns-tcp-queries-received-ipv4: 5066528 dns-tcp-queries-received-ipv6: 195123 dns-udp-responses-sent-ipv4: 2165083152 dns-udp-responses-sent-ipv6: 152043897 dns-tcp-responses-sent-ipv4: 5005261 dns-tcp-responses-sent-ipv6: 197355