--- service: i.root-servers.net start-period: '2014-12-07T00:00:00Z' end-period: '2014-12-08T00:04:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2654368793 dns-udp-queries-received-ipv6: 208341279 dns-tcp-queries-received-ipv4: 5627646 dns-tcp-queries-received-ipv6: 179552 dns-udp-responses-sent-ipv4: 2610327715 dns-udp-responses-sent-ipv6: 208288265 dns-tcp-responses-sent-ipv4: 5625235 dns-tcp-responses-sent-ipv6: 180182