--- service: i.root-servers.net start-period: '2015-06-13T00:00:00Z' end-period: '2015-06-14T00:00:16Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3203784583 dns-udp-queries-received-ipv6: 228191234 dns-tcp-queries-received-ipv4: 11460546 dns-tcp-queries-received-ipv6: 291344 dns-udp-responses-sent-ipv4: 3151760059 dns-udp-responses-sent-ipv6: 232293841 dns-tcp-responses-sent-ipv4: 11489283 dns-tcp-responses-sent-ipv6: 294904