--- service: a.root-servers.net start-period: '2015-08-29T00:00:00Z' end-period: '2015-08-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4564567287 dns-udp-queries-received-ipv6: 256945080 dns-tcp-queries-received-ipv4: 19346651 dns-tcp-queries-received-ipv6: 10212181 dns-udp-responses-sent-ipv4: 4949012507 dns-udp-responses-sent-ipv6: 259554294 dns-tcp-responses-sent-ipv4: 16336080 dns-tcp-responses-sent-ipv6: 8741647