--- service: i.root-servers.net start-period: '2013-11-28T00:00:00Z' end-period: '2013-11-29T00:00:11Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2245828838 dns-udp-queries-received-ipv6: 132152260 dns-tcp-queries-received-ipv4: 5064362 dns-tcp-queries-received-ipv6: 252736 dns-udp-responses-sent-ipv4: 2303251070 dns-udp-responses-sent-ipv6: 143243606 dns-tcp-responses-sent-ipv4: 5079144 dns-tcp-responses-sent-ipv6: 261670