--- service: a.root-servers.net start-period: '2014-05-15T00:00:00Z' end-period: '2014-05-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2330886060 dns-udp-queries-received-ipv6: 110730522 dns-tcp-queries-received-ipv4: 11538096 dns-tcp-queries-received-ipv6: 790893 dns-udp-responses-sent-ipv4: 2330087080 dns-udp-responses-sent-ipv6: 110644014 dns-tcp-responses-sent-ipv4: 11554157 dns-tcp-responses-sent-ipv6: 114