--- service: a.root-servers.net start-period: '2017-01-14T00:00:00Z' end-period: '2017-01-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3983237569 dns-udp-queries-received-ipv6: 456278842 dns-tcp-queries-received-ipv4: 129087669 dns-tcp-queries-received-ipv6: 9795482 dns-udp-responses-sent-ipv4: 3979652125 dns-udp-responses-sent-ipv6: 456127349 dns-tcp-responses-sent-ipv4: 129865786 dns-tcp-responses-sent-ipv6: 9810616