--- service: i.root-servers.net start-period: '2013-11-27T00:00:00Z' end-period: '2013-11-28T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2349054219 dns-udp-queries-received-ipv6: 137280590 dns-tcp-queries-received-ipv4: 5236246 dns-tcp-queries-received-ipv6: 245872 dns-udp-responses-sent-ipv4: 2412838997 dns-udp-responses-sent-ipv6: 149163935 dns-tcp-responses-sent-ipv4: 5245731 dns-tcp-responses-sent-ipv6: 254540