--- service: i.root-servers.net start-period: '2013-07-05T00:00:00Z' end-period: '2013-07-06T00:01:43Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2035107918 dns-udp-queries-received-ipv6: 136908338 dns-tcp-queries-received-ipv4: 3011307 dns-tcp-queries-received-ipv6: 151101 dns-udp-responses-sent-ipv4: 2044220249 dns-udp-responses-sent-ipv6: 144033426 dns-tcp-responses-sent-ipv4: 3182213 dns-tcp-responses-sent-ipv6: 154097