--- service: i.root-servers.net start-period: '2014-04-04T00:00:00Z' end-period: '2014-04-05T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2561801686 dns-udp-queries-received-ipv6: 163839614 dns-tcp-queries-received-ipv4: 5673649 dns-tcp-queries-received-ipv6: 276431 dns-udp-responses-sent-ipv4: 2508215623 dns-udp-responses-sent-ipv6: 164238540 dns-tcp-responses-sent-ipv4: 5608471 dns-tcp-responses-sent-ipv6: 278079