--- service: a.root-servers.net start-period: '2015-08-10T00:00:00Z' end-period: '2015-08-10T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4605989105 dns-udp-queries-received-ipv6: 286493501 dns-tcp-queries-received-ipv4: 18662307 dns-tcp-queries-received-ipv6: 10421777 dns-udp-responses-sent-ipv4: 4634625318 dns-udp-responses-sent-ipv6: 288257902 dns-tcp-responses-sent-ipv4: 15757702 dns-tcp-responses-sent-ipv6: 8769990