--- service: a.root-servers.net start-period: '2014-07-07T00:00:00Z' end-period: '2014-07-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2172673188 dns-udp-queries-received-ipv6: 115341125 dns-tcp-queries-received-ipv4: 13735698 dns-tcp-queries-received-ipv6: 832375 dns-udp-responses-sent-ipv4: 2172603368 dns-udp-responses-sent-ipv6: 115337522 dns-tcp-responses-sent-ipv4: 13779315 dns-tcp-responses-sent-ipv6: 493320