--- service: i.root-servers.net start-period: '2014-09-27T00:00:00Z' end-period: '2014-09-28T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3586170687 dns-udp-queries-received-ipv6: 232857635 dns-tcp-queries-received-ipv4: 14796346 dns-tcp-queries-received-ipv6: 379940 dns-udp-responses-sent-ipv4: 3536416347 dns-udp-responses-sent-ipv6: 236350398 dns-tcp-responses-sent-ipv4: 14723418 dns-tcp-responses-sent-ipv6: 377052