--- service: i.root-servers.net start-period: '2015-02-22T00:00:00Z' end-period: '2015-02-23T00:00:07Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3043320741 dns-udp-queries-received-ipv6: 253038838 dns-tcp-queries-received-ipv4: 6480143 dns-tcp-queries-received-ipv6: 202684 dns-udp-responses-sent-ipv4: 3003326062 dns-udp-responses-sent-ipv6: 252962007 dns-tcp-responses-sent-ipv4: 6526992 dns-tcp-responses-sent-ipv6: 210811