--- service: j.root-servers.net start-period: '2015-11-21T00:00:00Z' end-period: '2015-11-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3849066109 dns-udp-queries-received-ipv6: 538334951 dns-tcp-queries-received-ipv4: 66497683 dns-tcp-queries-received-ipv6: 1505962 dns-udp-responses-sent-ipv4: 3629981920 dns-udp-responses-sent-ipv6: 540537803 dns-tcp-responses-sent-ipv4: 64809478 dns-tcp-responses-sent-ipv6: 303702