--- service: j.root-servers.net start-period: '2015-09-28T00:00:00Z' end-period: '2015-09-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3931922633 dns-udp-queries-received-ipv6: 549344260 dns-tcp-queries-received-ipv4: 64008870 dns-tcp-queries-received-ipv6: 23892470 dns-udp-responses-sent-ipv4: 3859782813 dns-udp-responses-sent-ipv6: 548479157 dns-tcp-responses-sent-ipv4: 62186908 dns-tcp-responses-sent-ipv6: 22038858