--- service: i.root-servers.net start-period: '2014-11-22T00:00:00Z' end-period: '2014-11-23T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2748788932 dns-udp-queries-received-ipv6: 202564360 dns-tcp-queries-received-ipv4: 6414619 dns-tcp-queries-received-ipv6: 172268 dns-udp-responses-sent-ipv4: 2696480908 dns-udp-responses-sent-ipv6: 202492730 dns-tcp-responses-sent-ipv4: 6484753 dns-tcp-responses-sent-ipv6: 173002