--- service: i.root-servers.net start-period: '2013-10-03T00:00:00Z' end-period: '2013-10-04T00:13:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2335993127 dns-udp-queries-received-ipv6: 127969953 dns-tcp-queries-received-ipv4: 5370714 dns-tcp-queries-received-ipv6: 124120 dns-udp-responses-sent-ipv4: 2419537051 dns-udp-responses-sent-ipv6: 135767187 dns-tcp-responses-sent-ipv4: 5421284 dns-tcp-responses-sent-ipv6: 145452