--- service: d.root-servers.net start-period: '2015-11-27T00:00:00Z' end-period: '2015-11-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3576358116 dns-udp-queries-received-ipv6: 396878238 dns-tcp-queries-received-ipv4: 17683186 dns-tcp-queries-received-ipv6: 541762 dns-udp-responses-sent-ipv4: 3559621057 dns-udp-responses-sent-ipv6: 396625399 dns-tcp-responses-sent-ipv4: 17493270 dns-tcp-responses-sent-ipv6: 541424