--- service: a.root-servers.net start-period: '2016-08-15T00:00:00Z' end-period: '2016-08-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3600860163 dns-udp-queries-received-ipv6: 494122958 dns-tcp-queries-received-ipv4: 50483914 dns-tcp-queries-received-ipv6: 5511058 dns-udp-responses-sent-ipv4: 3592441174 dns-udp-responses-sent-ipv6: 494101940 dns-tcp-responses-sent-ipv4: 49350915 dns-tcp-responses-sent-ipv6: 3899843