--- service: j.root-servers.net start-period: '2014-02-21T00:00:00Z' end-period: '2014-02-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2710805280 dns-udp-queries-received-ipv6: 219307029 dns-tcp-queries-received-ipv4: 21677583 dns-tcp-queries-received-ipv6: 4371977 dns-udp-responses-sent-ipv4: 2685805996 dns-udp-responses-sent-ipv6: 219191874 dns-tcp-responses-sent-ipv4: 20235359 dns-tcp-responses-sent-ipv6: 196