--- service: i.root-servers.net start-period: '2014-06-17T00:00:00Z' end-period: '2014-06-18T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2900100696 dns-udp-queries-received-ipv6: 257342750 dns-tcp-queries-received-ipv4: 6420310 dns-tcp-queries-received-ipv6: 262075 dns-udp-responses-sent-ipv4: 2845518367 dns-udp-responses-sent-ipv6: 259463734 dns-tcp-responses-sent-ipv4: 6641957 dns-tcp-responses-sent-ipv6: 265157