--- service: a.root-servers.net start-period: '2014-06-30T00:00:00Z' end-period: '2014-06-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2144678869 dns-udp-queries-received-ipv6: 113988241 dns-tcp-queries-received-ipv4: 14304163 dns-tcp-queries-received-ipv6: 770172 dns-udp-responses-sent-ipv4: 2143060681 dns-udp-responses-sent-ipv6: 113984312 dns-tcp-responses-sent-ipv4: 14333850 dns-tcp-responses-sent-ipv6: 478224