--- service: a.root-servers.net start-period: '2015-08-25T00:00:00Z' end-period: '2015-08-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4307452177 dns-udp-queries-received-ipv6: 209630218 dns-tcp-queries-received-ipv4: 16787512 dns-tcp-queries-received-ipv6: 4423995 dns-udp-responses-sent-ipv4: 4335897792 dns-udp-responses-sent-ipv6: 212529713 dns-tcp-responses-sent-ipv4: 13910562 dns-tcp-responses-sent-ipv6: 2915857