--- service: a.root-servers.net start-period: '2014-05-09T00:00:00Z' end-period: '2014-05-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2447687393 dns-udp-queries-received-ipv6: 105572957 dns-tcp-queries-received-ipv4: 12141380 dns-tcp-queries-received-ipv6: 1537363 dns-udp-responses-sent-ipv4: 2447017827 dns-udp-responses-sent-ipv6: 105565156 dns-tcp-responses-sent-ipv4: 12160887 dns-tcp-responses-sent-ipv6: 126