--- service: a.root-servers.net start-period: '2014-07-27T00:00:00Z' end-period: '2014-07-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1561688560 dns-udp-queries-received-ipv6: 105633224 dns-tcp-queries-received-ipv4: 14664917 dns-tcp-queries-received-ipv6: 1025200 dns-udp-responses-sent-ipv4: 1561592142 dns-udp-responses-sent-ipv6: 105637049 dns-tcp-responses-sent-ipv4: 15033826 dns-tcp-responses-sent-ipv6: 429559