--- service: i.root-servers.net start-period: '2014-08-20T00:00:00Z' end-period: '2014-08-21T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3015621673 dns-udp-queries-received-ipv6: 217803934 dns-tcp-queries-received-ipv4: 7109911 dns-tcp-queries-received-ipv6: 258625 dns-udp-responses-sent-ipv4: 2960185856 dns-udp-responses-sent-ipv6: 218178213 dns-tcp-responses-sent-ipv4: 6702405 dns-tcp-responses-sent-ipv6: 261755