--- service: j.root-servers.net start-period: '2015-04-09T00:00:00Z' end-period: '2015-04-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3460764448 dns-udp-queries-received-ipv6: 327187980 dns-tcp-queries-received-ipv4: 30642742 dns-tcp-queries-received-ipv6: 7056002 dns-udp-responses-sent-ipv4: 3426728602 dns-udp-responses-sent-ipv6: 327258009 dns-tcp-responses-sent-ipv4: 30427029 dns-tcp-responses-sent-ipv6: 4165324