--- service: a.root-servers.net start-period: '2014-04-15T00:00:00Z' end-period: '2014-04-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3005140319 dns-udp-queries-received-ipv6: 90591159 dns-tcp-queries-received-ipv4: 15364224 dns-tcp-queries-received-ipv6: 1345669 dns-udp-responses-sent-ipv4: 3004453835 dns-udp-responses-sent-ipv6: 90498744 dns-tcp-responses-sent-ipv4: 15339233 dns-tcp-responses-sent-ipv6: 120