--- service: i.root-servers.net start-period: '2015-08-19T00:00:00Z' end-period: '2015-08-20T00:00:08Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3779227993 dns-udp-queries-received-ipv6: 267607719 dns-tcp-queries-received-ipv4: 32288029 dns-tcp-queries-received-ipv6: 382217 dns-udp-responses-sent-ipv4: 5341860038 dns-udp-responses-sent-ipv6: 267584983 dns-tcp-responses-sent-ipv4: 32357667 dns-tcp-responses-sent-ipv6: 386221