--- service: d.root-servers.net start-period: '2015-11-30T00:00:00Z' end-period: '2015-11-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4626930207 dns-udp-queries-received-ipv6: 428339981 dns-tcp-queries-received-ipv4: 28361180 dns-tcp-queries-received-ipv6: 668193 dns-udp-responses-sent-ipv4: 4602289989 dns-udp-responses-sent-ipv6: 427969545 dns-tcp-responses-sent-ipv4: 28104183 dns-tcp-responses-sent-ipv6: 667748