--- service: i.root-servers.net start-period: '2014-02-17T00:00:00Z' end-period: '2014-02-18T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2587697781 dns-udp-queries-received-ipv6: 174118081 dns-tcp-queries-received-ipv4: 5237879 dns-tcp-queries-received-ipv6: 309680 dns-udp-responses-sent-ipv4: 2531014187 dns-udp-responses-sent-ipv6: 174192366 dns-tcp-responses-sent-ipv4: 5283834 dns-tcp-responses-sent-ipv6: 309040