--- service: i.root-servers.net start-period: '2015-11-14T00:00:00Z' end-period: '2015-11-15T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4039152036 dns-udp-queries-received-ipv6: 307633368 dns-tcp-queries-received-ipv4: 27138786 dns-tcp-queries-received-ipv6: 732624 dns-udp-responses-sent-ipv4: 3984245511 dns-udp-responses-sent-ipv6: 313094615 dns-tcp-responses-sent-ipv4: 27102862 dns-tcp-responses-sent-ipv6: 734523