--- service: j.root-servers.net start-period: '2014-02-28T00:00:00Z' end-period: '2014-02-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2882020160 dns-udp-queries-received-ipv6: 216087257 dns-tcp-queries-received-ipv4: 20941731 dns-tcp-queries-received-ipv6: 4525627 dns-udp-responses-sent-ipv4: 2860019578 dns-udp-responses-sent-ipv6: 215966949 dns-tcp-responses-sent-ipv4: 19598955 dns-tcp-responses-sent-ipv6: 204