--- service: j.root-servers.net start-period: '2015-02-27T00:00:00Z' end-period: '2015-02-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3308233954 dns-udp-queries-received-ipv6: 323862393 dns-tcp-queries-received-ipv4: 28831889 dns-tcp-queries-received-ipv6: 3696521 dns-udp-responses-sent-ipv4: 3313093885 dns-udp-responses-sent-ipv6: 323855190 dns-tcp-responses-sent-ipv4: 28691915 dns-tcp-responses-sent-ipv6: 3329815