--- service: b.root-servers.net start-period: 2016-06-13T00:00:00Z end-period: 2016-06-13T23:59:59Z metric: traffic-volume dns-udp-queries-received-ipv4: 2521110419 dns-udp-queries-received-ipv6: 303450695 dns-tcp-queries-received-ipv4: 49110849 dns-tcp-queries-received-ipv6: 3963296 dns-udp-responses-sent-ipv4: 2453284963 dns-udp-responses-sent-ipv6: 299975516 dns-tcp-responses-sent-ipv4: 48779903 dns-tcp-responses-sent-ipv6: 3963275