--- service: a.root-servers.net start-period: '2014-04-29T00:00:00Z' end-period: '2014-04-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2551742935 dns-udp-queries-received-ipv6: 112205059 dns-tcp-queries-received-ipv4: 13542134 dns-tcp-queries-received-ipv6: 1405648 dns-udp-responses-sent-ipv4: 2551026866 dns-udp-responses-sent-ipv6: 112158283 dns-tcp-responses-sent-ipv4: 13554832 dns-tcp-responses-sent-ipv6: 166