--- service: a.root-servers.net start-period: '2015-10-29T00:00:00Z' end-period: '2015-10-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3259770815 dns-udp-queries-received-ipv6: 319635099 dns-tcp-queries-received-ipv4: 24425313 dns-tcp-queries-received-ipv6: 5234186 dns-udp-responses-sent-ipv4: 3267298475 dns-udp-responses-sent-ipv6: 318675284 dns-tcp-responses-sent-ipv4: 20914768 dns-tcp-responses-sent-ipv6: 1958548