--- service: a.root-servers.net start-period: '2014-05-17T00:00:00Z' end-period: '2014-05-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1972787987 dns-udp-queries-received-ipv6: 102925862 dns-tcp-queries-received-ipv4: 10332760 dns-tcp-queries-received-ipv6: 723590 dns-udp-responses-sent-ipv4: 1971972619 dns-udp-responses-sent-ipv6: 102918457 dns-tcp-responses-sent-ipv4: 10341096 dns-tcp-responses-sent-ipv6: 121