--- service: j.root-servers.net start-period: '2015-07-18T00:00:00Z' end-period: '2015-07-18T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2698215354 dns-udp-queries-received-ipv6: 281913701 dns-tcp-queries-received-ipv4: 31084315 dns-tcp-queries-received-ipv6: 23769938 dns-udp-responses-sent-ipv4: 2625931147 dns-udp-responses-sent-ipv6: 281797019 dns-tcp-responses-sent-ipv4: 30256017 dns-tcp-responses-sent-ipv6: 30084612