--- service: a.root-servers.net start-period: '2016-09-15T00:00:00Z' end-period: '2016-09-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4804874686 dns-udp-queries-received-ipv6: 506158234 dns-tcp-queries-received-ipv4: 114536453 dns-tcp-queries-received-ipv6: 6327445 dns-udp-responses-sent-ipv4: 4796286107 dns-udp-responses-sent-ipv6: 506013360 dns-tcp-responses-sent-ipv4: 108777016 dns-tcp-responses-sent-ipv6: 4585217