--- service: a.root-servers.net start-period: '2014-03-09T00:00:00Z' end-period: '2014-03-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1975443225 dns-udp-queries-received-ipv6: 81361123 dns-tcp-queries-received-ipv4: 9377176 dns-tcp-queries-received-ipv6: 1198074 dns-udp-responses-sent-ipv4: 1943646058 dns-udp-responses-sent-ipv6: 81351949 dns-tcp-responses-sent-ipv4: 9413290 dns-tcp-responses-sent-ipv6: 176