--- service: a.root-servers.net start-period: '2014-12-30T00:00:00Z' end-period: '2014-12-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2662615778 dns-udp-queries-received-ipv6: 191609332 dns-tcp-queries-received-ipv4: 13940119 dns-tcp-queries-received-ipv6: 2404469 dns-udp-responses-sent-ipv4: 2662091206 dns-udp-responses-sent-ipv6: 191572152 dns-tcp-responses-sent-ipv4: 12889621 dns-tcp-responses-sent-ipv6: 1605478