--- service: a.root-servers.net start-period: '2016-07-14T00:00:00Z' end-period: '2016-07-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4369218419 dns-udp-queries-received-ipv6: 516247049 dns-tcp-queries-received-ipv4: 86624985 dns-tcp-queries-received-ipv6: 7150546 dns-udp-responses-sent-ipv4: 4367709944 dns-udp-responses-sent-ipv6: 516314295 dns-tcp-responses-sent-ipv4: 73304821 dns-tcp-responses-sent-ipv6: 949143