--- service: a.root-servers.net start-period: '2016-06-08T00:00:00Z' end-period: '2016-06-08T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6057648181 dns-udp-queries-received-ipv6: 438854932 dns-tcp-queries-received-ipv4: 82830740 dns-tcp-queries-received-ipv6: 5638200 dns-udp-responses-sent-ipv4: 6056392640 dns-udp-responses-sent-ipv6: 438606578 dns-tcp-responses-sent-ipv4: 70334573 dns-tcp-responses-sent-ipv6: 333051