--- service: a.root-servers.net start-period: '2013-12-22T00:00:00Z' end-period: '2013-12-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1165232583 dns-udp-queries-received-ipv6: 58785025 dns-tcp-queries-received-ipv4: 5897816 dns-tcp-queries-received-ipv6: 712232 dns-udp-responses-sent-ipv4: 1165300944 dns-udp-responses-sent-ipv6: 58796385 dns-tcp-responses-sent-ipv4: 6028287 dns-tcp-responses-sent-ipv6: 100