--- service: j.root-servers.net start-period: '2013-12-30T00:00:00Z' end-period: '2013-12-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2524310849 dns-udp-queries-received-ipv6: 167429715 dns-tcp-queries-received-ipv4: 23263697 dns-tcp-queries-received-ipv6: 2613054 dns-udp-responses-sent-ipv4: 2518008913 dns-udp-responses-sent-ipv6: 167393081 dns-tcp-responses-sent-ipv4: 21534024 dns-tcp-responses-sent-ipv6: 182