--- service: i.root-servers.net start-period: '2013-07-07T00:00:00Z' end-period: '2013-07-08T00:02:42Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1775545223 dns-udp-queries-received-ipv6: 119121999 dns-tcp-queries-received-ipv4: 2476837 dns-tcp-queries-received-ipv6: 146766 dns-udp-responses-sent-ipv4: 1778146584 dns-udp-responses-sent-ipv6: 125704255 dns-tcp-responses-sent-ipv4: 2748705 dns-tcp-responses-sent-ipv6: 149378