--- service: a.root-servers.net start-period: '2014-04-22T00:00:00Z' end-period: '2014-04-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2777829530 dns-udp-queries-received-ipv6: 101550897 dns-tcp-queries-received-ipv4: 12158231 dns-tcp-queries-received-ipv6: 1350850 dns-udp-responses-sent-ipv4: 2777116788 dns-udp-responses-sent-ipv6: 101525554 dns-tcp-responses-sent-ipv4: 12148871 dns-tcp-responses-sent-ipv6: 126