--- service: j.root-servers.net start-period: '2013-12-01T00:00:00Z' end-period: '2013-12-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2048079292 dns-udp-queries-received-ipv6: 135899999 dns-tcp-queries-received-ipv4: 21619759 dns-tcp-queries-received-ipv6: 3943587 dns-udp-responses-sent-ipv4: 2040035941 dns-udp-responses-sent-ipv6: 135887883 dns-tcp-responses-sent-ipv4: 19662880 dns-tcp-responses-sent-ipv6: 258