--- service: a.root-servers.net start-period: '2014-12-12T00:00:00Z' end-period: '2014-12-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2602463286 dns-udp-queries-received-ipv6: 192806245 dns-tcp-queries-received-ipv4: 19866103 dns-tcp-queries-received-ipv6: 2305285 dns-udp-responses-sent-ipv4: 2601572600 dns-udp-responses-sent-ipv6: 192757408 dns-tcp-responses-sent-ipv4: 18517763 dns-tcp-responses-sent-ipv6: 1398599