--- service: i.root-servers.net start-period: '2014-06-15T00:00:00Z' end-period: '2014-06-16T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2280960516 dns-udp-queries-received-ipv6: 224541554 dns-tcp-queries-received-ipv4: 6083199 dns-tcp-queries-received-ipv6: 245346 dns-udp-responses-sent-ipv4: 2234535278 dns-udp-responses-sent-ipv6: 225556584 dns-tcp-responses-sent-ipv4: 6299742 dns-tcp-responses-sent-ipv6: 247480