--- service: a.root-servers.net start-period: '2014-07-09T00:00:00Z' end-period: '2014-07-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2111108252 dns-udp-queries-received-ipv6: 129112735 dns-tcp-queries-received-ipv4: 18717264 dns-tcp-queries-received-ipv6: 1047653 dns-udp-responses-sent-ipv4: 2110879425 dns-udp-responses-sent-ipv6: 129107721 dns-tcp-responses-sent-ipv4: 18729969 dns-tcp-responses-sent-ipv6: 473125