--- service: i.root-servers.net start-period: '2014-01-07T00:00:00Z' end-period: '2014-01-08T00:00:06Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2504313673 dns-udp-queries-received-ipv6: 150442941 dns-tcp-queries-received-ipv4: 4979410 dns-tcp-queries-received-ipv6: 268120 dns-udp-responses-sent-ipv4: 2450254073 dns-udp-responses-sent-ipv6: 150614928 dns-tcp-responses-sent-ipv4: 5008711 dns-tcp-responses-sent-ipv6: 271006