--- service: i.root-servers.net start-period: '2014-10-20T00:00:00Z' end-period: '2014-10-21T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3390985109 dns-udp-queries-received-ipv6: 223638157 dns-tcp-queries-received-ipv4: 7422215 dns-tcp-queries-received-ipv6: 188884 dns-udp-responses-sent-ipv4: 3330911390 dns-udp-responses-sent-ipv6: 227326296 dns-tcp-responses-sent-ipv4: 7523271 dns-tcp-responses-sent-ipv6: 188932