--- service: a.root-servers.net start-period: '2015-08-07T00:00:00Z' end-period: '2015-08-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4646829790 dns-udp-queries-received-ipv6: 284075430 dns-tcp-queries-received-ipv4: 19330603 dns-tcp-queries-received-ipv6: 11203356 dns-udp-responses-sent-ipv4: 4673394837 dns-udp-responses-sent-ipv6: 286207156 dns-tcp-responses-sent-ipv4: 16347474 dns-tcp-responses-sent-ipv6: 8706330