--- service: i.root-servers.net start-period: '2014-03-08T00:00:00Z' end-period: '2014-03-09T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2362100869 dns-udp-queries-received-ipv6: 166400865 dns-tcp-queries-received-ipv4: 5032129 dns-tcp-queries-received-ipv6: 285156 dns-udp-responses-sent-ipv4: 2312013768 dns-udp-responses-sent-ipv6: 166514914 dns-tcp-responses-sent-ipv4: 5044015 dns-tcp-responses-sent-ipv6: 288100