--- service: i.root-servers.net start-period: '2015-11-07T00:00:00Z' end-period: '2015-11-08T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4199215382 dns-udp-queries-received-ipv6: 298969081 dns-tcp-queries-received-ipv4: 28509374 dns-tcp-queries-received-ipv6: 451121 dns-udp-responses-sent-ipv4: 4147639396 dns-udp-responses-sent-ipv6: 304241468 dns-tcp-responses-sent-ipv4: 28622445 dns-tcp-responses-sent-ipv6: 455156