--- service: a.root-servers.net start-period: '2013-10-17T00:00:00Z' end-period: '2013-10-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1495884053 dns-udp-queries-received-ipv6: 95400896 dns-tcp-queries-received-ipv4: 8058095 dns-tcp-queries-received-ipv6: 1563455 dns-udp-responses-sent-ipv4: 1494916347 dns-udp-responses-sent-ipv6: 95363882 dns-tcp-responses-sent-ipv4: 8517792 dns-tcp-responses-sent-ipv6: 18002