--- service: i.root-servers.net start-period: '2015-11-13T00:00:00Z' end-period: '2015-11-14T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4416184103 dns-udp-queries-received-ipv6: 324901724 dns-tcp-queries-received-ipv4: 27359252 dns-tcp-queries-received-ipv6: 765748 dns-udp-responses-sent-ipv4: 4348899045 dns-udp-responses-sent-ipv6: 330368969 dns-tcp-responses-sent-ipv4: 27462960 dns-tcp-responses-sent-ipv6: 767916