--- service: j.root-servers.net start-period: '2014-12-21T00:00:00Z' end-period: '2014-12-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3006176487 dns-udp-queries-received-ipv6: 215339986 dns-tcp-queries-received-ipv4: 28068365 dns-tcp-queries-received-ipv6: 5539075 dns-udp-responses-sent-ipv4: 3001606550 dns-udp-responses-sent-ipv6: 215307190 dns-tcp-responses-sent-ipv4: 28053336 dns-tcp-responses-sent-ipv6: 4842392