--- service: i.root-servers.net start-period: '2013-11-25T00:00:00Z' end-period: '2013-11-26T00:01:12Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2355240047 dns-udp-queries-received-ipv6: 133651917 dns-tcp-queries-received-ipv4: 5105410 dns-tcp-queries-received-ipv6: 248346 dns-udp-responses-sent-ipv4: 2415102432 dns-udp-responses-sent-ipv6: 144762079 dns-tcp-responses-sent-ipv4: 5116509 dns-tcp-responses-sent-ipv6: 256406