--- service: a.root-servers.net start-period: '2015-08-31T00:00:00Z' end-period: '2015-08-31T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4719453733 dns-udp-queries-received-ipv6: 273788569 dns-tcp-queries-received-ipv4: 20970662 dns-tcp-queries-received-ipv6: 10078936 dns-udp-responses-sent-ipv4: 4744722461 dns-udp-responses-sent-ipv6: 276151317 dns-tcp-responses-sent-ipv4: 17700515 dns-tcp-responses-sent-ipv6: 8395743