--- service: j.root-servers.net start-period: '2013-12-08T00:00:00Z' end-period: '2013-12-08T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2179998477 dns-udp-queries-received-ipv6: 138697080 dns-tcp-queries-received-ipv4: 21221452 dns-tcp-queries-received-ipv6: 4038364 dns-udp-responses-sent-ipv4: 2174048027 dns-udp-responses-sent-ipv6: 138617881 dns-tcp-responses-sent-ipv4: 19793094 dns-tcp-responses-sent-ipv6: 195