--- service: d.root-servers.net start-period: '2015-10-18T00:00:00Z' end-period: '2015-10-18T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3025659978 dns-udp-queries-received-ipv6: 399530533 dns-tcp-queries-received-ipv4: 14609566 dns-tcp-queries-received-ipv6: 456108 dns-udp-responses-sent-ipv4: 3012359604 dns-udp-responses-sent-ipv6: 399251131 dns-tcp-responses-sent-ipv4: 14588874 dns-tcp-responses-sent-ipv6: 455983