--- service: a.root-servers.net start-period: '2015-08-30T00:00:00Z' end-period: '2015-08-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4296625452 dns-udp-queries-received-ipv6: 251862433 dns-tcp-queries-received-ipv4: 19389257 dns-tcp-queries-received-ipv6: 9863373 dns-udp-responses-sent-ipv4: 4319201948 dns-udp-responses-sent-ipv6: 254116811 dns-tcp-responses-sent-ipv4: 16353873 dns-tcp-responses-sent-ipv6: 8392354