--- service: a.root-servers.net start-period: '2015-01-16T00:00:00Z' end-period: '2015-01-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2679258843 dns-udp-queries-received-ipv6: 215301422 dns-tcp-queries-received-ipv4: 15404165 dns-tcp-queries-received-ipv6: 2409227 dns-udp-responses-sent-ipv4: 2678629264 dns-udp-responses-sent-ipv6: 215154146 dns-tcp-responses-sent-ipv4: 14176229 dns-tcp-responses-sent-ipv6: 1585769