--- service: j.root-servers.net start-period: '2015-08-21T00:00:00Z' end-period: '2015-08-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4866485122 dns-udp-queries-received-ipv6: 298465975 dns-tcp-queries-received-ipv4: 55871058 dns-tcp-queries-received-ipv6: 24612584 dns-udp-responses-sent-ipv4: 3781903039 dns-udp-responses-sent-ipv6: 299411615 dns-tcp-responses-sent-ipv4: 54559403 dns-tcp-responses-sent-ipv6: 22775500