--- service: a.root-servers.net start-period: '2015-01-05T00:00:00Z' end-period: '2015-01-05T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2672543840 dns-udp-queries-received-ipv6: 191001981 dns-tcp-queries-received-ipv4: 17658514 dns-tcp-queries-received-ipv6: 2359628 dns-udp-responses-sent-ipv4: 2671910985 dns-udp-responses-sent-ipv6: 190935914 dns-tcp-responses-sent-ipv4: 16338278 dns-tcp-responses-sent-ipv6: 1574329