--- service: i.root-servers.net start-period: '2016-04-12T06:59:19Z' end-period: '2016-04-13T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2589521679 dns-udp-queries-received-ipv6: 235886391 dns-tcp-queries-received-ipv4: 15120870 dns-tcp-queries-received-ipv6: 529425 dns-udp-responses-sent-ipv4: 2549086597 dns-udp-responses-sent-ipv6: 235543503 dns-tcp-responses-sent-ipv4: 14585740 dns-tcp-responses-sent-ipv6: 532751