--- service: a.root-servers.net start-period: '2014-12-11T00:00:00Z' end-period: '2014-12-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2828449121 dns-udp-queries-received-ipv6: 210807906 dns-tcp-queries-received-ipv4: 20258214 dns-tcp-queries-received-ipv6: 2171788 dns-udp-responses-sent-ipv4: 2827516288 dns-udp-responses-sent-ipv6: 210727823 dns-tcp-responses-sent-ipv4: 18928501 dns-tcp-responses-sent-ipv6: 1233331