--- service: a.root-servers.net start-period: '2014-05-16T00:00:00Z' end-period: '2014-05-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2332315999 dns-udp-queries-received-ipv6: 112207590 dns-tcp-queries-received-ipv4: 11904683 dns-tcp-queries-received-ipv6: 793330 dns-udp-responses-sent-ipv4: 2331606529 dns-udp-responses-sent-ipv6: 112197750 dns-tcp-responses-sent-ipv4: 11926403 dns-tcp-responses-sent-ipv6: 114