--- service: i.root-servers.net start-period: '2015-10-31T00:00:00Z' end-period: '2015-11-01T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3916532144 dns-udp-queries-received-ipv6: 295746671 dns-tcp-queries-received-ipv4: 21409113 dns-tcp-queries-received-ipv6: 550787 dns-udp-responses-sent-ipv4: 3868817676 dns-udp-responses-sent-ipv6: 301164635 dns-tcp-responses-sent-ipv4: 21389536 dns-tcp-responses-sent-ipv6: 554278