--- service: i.root-servers.net start-period: '2013-12-07T00:00:00Z' end-period: '2013-12-08T00:00:38Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2126694550 dns-udp-queries-received-ipv6: 123337529 dns-tcp-queries-received-ipv4: 4621932 dns-tcp-queries-received-ipv6: 249669 dns-udp-responses-sent-ipv4: 2150261456 dns-udp-responses-sent-ipv6: 132122444 dns-tcp-responses-sent-ipv4: 4645192 dns-tcp-responses-sent-ipv6: 260591