--- service: i.root-servers.net start-period: '2014-09-29T00:00:00Z' end-period: '2014-09-30T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3174968001 dns-udp-queries-received-ipv6: 214997534 dns-tcp-queries-received-ipv4: 6379587 dns-tcp-queries-received-ipv6: 251146 dns-udp-responses-sent-ipv4: 3117496437 dns-udp-responses-sent-ipv6: 218813510 dns-tcp-responses-sent-ipv4: 6603695 dns-tcp-responses-sent-ipv6: 251570