--- service: a.root-servers.net start-period: '2013-10-08T00:00:00Z' end-period: '2013-10-08T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1822800550 dns-udp-queries-received-ipv6: 103867243 dns-tcp-queries-received-ipv4: 8713273 dns-tcp-queries-received-ipv6: 1226376 dns-udp-responses-sent-ipv4: 1820388117 dns-udp-responses-sent-ipv6: 103816395 dns-tcp-responses-sent-ipv4: 9203090 dns-tcp-responses-sent-ipv6: 20072