--- service: i.root-servers.net start-period: '2015-11-09T00:00:00Z' end-period: '2015-11-10T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4468349623 dns-udp-queries-received-ipv6: 322165289 dns-tcp-queries-received-ipv4: 31781501 dns-tcp-queries-received-ipv6: 504771 dns-udp-responses-sent-ipv4: 4411216353 dns-udp-responses-sent-ipv6: 327497554 dns-tcp-responses-sent-ipv4: 31871224 dns-tcp-responses-sent-ipv6: 501357