--- service: a.root-servers.net start-period: '2014-11-28T00:00:00Z' end-period: '2014-11-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2739932459 dns-udp-queries-received-ipv6: 192403742 dns-tcp-queries-received-ipv4: 18465760 dns-tcp-queries-received-ipv6: 2316202 dns-udp-responses-sent-ipv4: 2739220015 dns-udp-responses-sent-ipv6: 192354578 dns-tcp-responses-sent-ipv4: 17228639 dns-tcp-responses-sent-ipv6: 1587893