--- service: i.root-servers.net start-period: '2015-10-09T00:00:00Z' end-period: '2015-10-10T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4234267145 dns-udp-queries-received-ipv6: 336392536 dns-tcp-queries-received-ipv4: 29119256 dns-tcp-queries-received-ipv6: 506189 dns-udp-responses-sent-ipv4: 4163105324 dns-udp-responses-sent-ipv6: 336376955 dns-tcp-responses-sent-ipv4: 29123041 dns-tcp-responses-sent-ipv6: 510191