--- version: rssac002v3 service: j.root-servers.net start-period: '2018-12-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6683477709 dns-udp-queries-received-ipv6: 820870874 dns-tcp-queries-received-ipv4: 432538918 dns-tcp-queries-received-ipv6: 62062081 dns-udp-responses-sent-ipv4: 6195565149 dns-udp-responses-sent-ipv6: 784244901 dns-tcp-responses-sent-ipv4: 278428845 dns-tcp-responses-sent-ipv6: 43383464