--- service: a.root-servers.net start-period: '2015-05-08T00:00:00Z' end-period: '2015-05-08T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2798197236 dns-udp-queries-received-ipv6: 212192767 dns-tcp-queries-received-ipv4: 21360012 dns-tcp-queries-received-ipv6: 1668181 dns-udp-responses-sent-ipv4: 2739764654 dns-udp-responses-sent-ipv6: 217468805 dns-tcp-responses-sent-ipv4: 17009825 dns-tcp-responses-sent-ipv6: 726323