--- service: i.root-servers.net start-period: '2016-05-08T00:00:00Z' end-period: '2016-05-09T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5037483034 dns-udp-queries-received-ipv6: 394164910 dns-tcp-queries-received-ipv4: 34505821 dns-tcp-queries-received-ipv6: 904462 dns-udp-responses-sent-ipv4: 4975765505 dns-udp-responses-sent-ipv6: 398880030 dns-tcp-responses-sent-ipv4: 33878554 dns-tcp-responses-sent-ipv6: 907945