--- service: j.root-servers.net start-period: '2015-09-25T00:00:00Z' end-period: '2015-09-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3945516821 dns-udp-queries-received-ipv6: 546089407 dns-tcp-queries-received-ipv4: 63516870 dns-tcp-queries-received-ipv6: 24861772 dns-udp-responses-sent-ipv4: 3875359691 dns-udp-responses-sent-ipv6: 544699651 dns-tcp-responses-sent-ipv4: 61547736 dns-tcp-responses-sent-ipv6: 23007587