--- service: d.root-servers.net start-period: '2015-11-18T00:00:00Z' end-period: '2015-11-18T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3808949264 dns-udp-queries-received-ipv6: 471742290 dns-tcp-queries-received-ipv4: 19695292 dns-tcp-queries-received-ipv6: 478567 dns-udp-responses-sent-ipv4: 3790278146 dns-udp-responses-sent-ipv6: 471485747 dns-tcp-responses-sent-ipv4: 19496391 dns-tcp-responses-sent-ipv6: 478307