--- service: a.root-servers.net start-period: '2015-08-06T00:00:00Z' end-period: '2015-08-06T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4774873688 dns-udp-queries-received-ipv6: 288962320 dns-tcp-queries-received-ipv4: 19091526 dns-tcp-queries-received-ipv6: 11274855 dns-udp-responses-sent-ipv4: 4804229914 dns-udp-responses-sent-ipv6: 291211206 dns-tcp-responses-sent-ipv4: 16096197 dns-tcp-responses-sent-ipv6: 8524553