--- service: a.root-servers.net start-period: '2013-11-27T00:00:00Z' end-period: '2013-11-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1546555898 dns-udp-queries-received-ipv6: 86652596 dns-tcp-queries-received-ipv4: 7974438 dns-tcp-queries-received-ipv6: 1352430 dns-udp-responses-sent-ipv4: 1544961428 dns-udp-responses-sent-ipv6: 86654559 dns-tcp-responses-sent-ipv4: 8553347 dns-tcp-responses-sent-ipv6: 241