--- service: a.root-servers.net start-period: '2015-03-27T00:00:00Z' end-period: '2015-03-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2762377260 dns-udp-queries-received-ipv6: 236793599 dns-tcp-queries-received-ipv4: 19904432 dns-tcp-queries-received-ipv6: 2060399 dns-udp-responses-sent-ipv4: 2747397961 dns-udp-responses-sent-ipv6: 236286762 dns-tcp-responses-sent-ipv4: 16591748 dns-tcp-responses-sent-ipv6: 1162686