--- service: j.root-servers.net start-period: '2013-12-12T00:00:00Z' end-period: '2013-12-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2596735356 dns-udp-queries-received-ipv6: 149658519 dns-tcp-queries-received-ipv4: 24040108 dns-tcp-queries-received-ipv6: 4086266 dns-udp-responses-sent-ipv4: 2590717670 dns-udp-responses-sent-ipv6: 149603915 dns-tcp-responses-sent-ipv4: 22415012 dns-tcp-responses-sent-ipv6: 122