--- service: a.root-servers.net start-period: '2015-08-12T00:00:00Z' end-period: '2015-08-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4285684694 dns-udp-queries-received-ipv6: 270137082 dns-tcp-queries-received-ipv4: 20314402 dns-tcp-queries-received-ipv6: 10139820 dns-udp-responses-sent-ipv4: 4558048405 dns-udp-responses-sent-ipv6: 276807869 dns-tcp-responses-sent-ipv4: 16963308 dns-tcp-responses-sent-ipv6: 8445293