--- version: rssac002v3 service: j.root-servers.net start-period: '2019-01-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6233306406 dns-udp-queries-received-ipv6: 850450857 dns-tcp-queries-received-ipv4: 439679184 dns-tcp-queries-received-ipv6: 70504182 dns-udp-responses-sent-ipv4: 5846737229 dns-udp-responses-sent-ipv6: 806972250 dns-tcp-responses-sent-ipv4: 283098545 dns-tcp-responses-sent-ipv6: 47370859