--- service: a.root-servers.net start-period: '2015-11-12T00:00:00Z' end-period: '2015-11-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3896412322 dns-udp-queries-received-ipv6: 306631515 dns-tcp-queries-received-ipv4: 24154221 dns-tcp-queries-received-ipv6: 2192396 dns-udp-responses-sent-ipv4: 3896089015 dns-udp-responses-sent-ipv6: 306389485 dns-tcp-responses-sent-ipv4: 21827268 dns-tcp-responses-sent-ipv6: 260963