--- service: a.root-servers.net start-period: '2014-11-19T00:00:00Z' end-period: '2014-11-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2904985160 dns-udp-queries-received-ipv6: 200639944 dns-tcp-queries-received-ipv4: 16993708 dns-tcp-queries-received-ipv6: 2284963 dns-udp-responses-sent-ipv4: 2903837011 dns-udp-responses-sent-ipv6: 200600314 dns-tcp-responses-sent-ipv4: 15489103 dns-tcp-responses-sent-ipv6: 1604343