--- service: a.root-servers.net start-period: '2014-01-07T00:00:00Z' end-period: '2014-01-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1497116166 dns-udp-queries-received-ipv6: 54155037 dns-tcp-queries-received-ipv4: 7670397 dns-tcp-queries-received-ipv6: 743995 dns-udp-responses-sent-ipv4: 1497186111 dns-udp-responses-sent-ipv6: 54159725 dns-tcp-responses-sent-ipv4: 7602494 dns-tcp-responses-sent-ipv6: 60