--- service: i.root-servers.net start-period: '2014-12-09T09:15:33Z' end-period: '2014-12-10T00:00:27Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1933223459 dns-udp-queries-received-ipv6: 137755231 dns-tcp-queries-received-ipv4: 3045973 dns-tcp-queries-received-ipv6: 111357 dns-udp-responses-sent-ipv4: 1902006157 dns-udp-responses-sent-ipv6: 137650445 dns-tcp-responses-sent-ipv4: 3074329 dns-tcp-responses-sent-ipv6: 110029