--- service: i.root-servers.net start-period: '2014-12-14T00:00:00Z' end-period: '2014-12-15T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2789157475 dns-udp-queries-received-ipv6: 201493941 dns-tcp-queries-received-ipv4: 6020496 dns-tcp-queries-received-ipv6: 178393 dns-udp-responses-sent-ipv4: 2772691201 dns-udp-responses-sent-ipv6: 202401702 dns-tcp-responses-sent-ipv4: 6022645 dns-tcp-responses-sent-ipv6: 181233