--- service: b.root-servers.net start-period: 2016-06-15T00:00:00Z end-period: 2016-06-15T23:59:59Z metric: traffic-volume dns-udp-queries-received-ipv4: 2529154918 dns-udp-queries-received-ipv6: 293442139 dns-tcp-queries-received-ipv4: 47884531 dns-tcp-queries-received-ipv6: 2218406 dns-udp-responses-sent-ipv4: 2474937981 dns-udp-responses-sent-ipv6: 291784760 dns-tcp-responses-sent-ipv4: 47567397 dns-tcp-responses-sent-ipv6: 2216108