--- service: a.root-servers.net start-period: '2014-12-22T00:00:00Z' end-period: '2014-12-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2796475120 dns-udp-queries-received-ipv6: 195213882 dns-tcp-queries-received-ipv4: 14917964 dns-tcp-queries-received-ipv6: 2407556 dns-udp-responses-sent-ipv4: 2795691205 dns-udp-responses-sent-ipv6: 195166857 dns-tcp-responses-sent-ipv4: 13724744 dns-tcp-responses-sent-ipv6: 1588487