--- service: i.root-servers.net start-period: '2015-08-29T00:00:00Z' end-period: '2015-08-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3577526534 dns-udp-queries-received-ipv6: 249888013 dns-tcp-queries-received-ipv4: 27989433 dns-tcp-queries-received-ipv6: 387957 dns-udp-responses-sent-ipv4: 5147291974 dns-udp-responses-sent-ipv6: 249895182 dns-tcp-responses-sent-ipv4: 28004037 dns-tcp-responses-sent-ipv6: 390596