--- service: d.root-servers.net start-period: '2016-05-29T00:00:00Z' end-period: '2016-05-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4519113055 dns-udp-queries-received-ipv6: 709456308 dns-tcp-queries-received-ipv4: 31798050 dns-tcp-queries-received-ipv6: 640970 dns-udp-responses-sent-ipv4: 4506139176 dns-udp-responses-sent-ipv6: 709273012 dns-tcp-responses-sent-ipv4: 31779657 dns-tcp-responses-sent-ipv6: 640902