--- service: i.root-servers.net start-period: '2015-08-28T00:00:00Z' end-period: '2015-08-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3835451364 dns-udp-queries-received-ipv6: 271758327 dns-tcp-queries-received-ipv4: 28437946 dns-tcp-queries-received-ipv6: 418803 dns-udp-responses-sent-ipv4: 5399176678 dns-udp-responses-sent-ipv6: 271758275 dns-tcp-responses-sent-ipv4: 28511915 dns-tcp-responses-sent-ipv6: 421385