--- service: i.root-servers.net start-period: '2013-05-06T00:00:00Z' end-period: '2013-05-07T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2105630565 dns-udp-queries-received-ipv6: 112514644 dns-tcp-queries-received-ipv4: 3980633 dns-tcp-queries-received-ipv6: 146932 dns-udp-responses-sent-ipv4: 2114360878 dns-udp-responses-sent-ipv6: 119918067 dns-tcp-responses-sent-ipv4: 3500496 dns-tcp-responses-sent-ipv6: 148217