--- version: rssac002v3 service: j.root-servers.net start-period: '2019-01-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6647948644 dns-udp-queries-received-ipv6: 885780200 dns-tcp-queries-received-ipv4: 446255174 dns-tcp-queries-received-ipv6: 75648839 dns-udp-responses-sent-ipv4: 6252765194 dns-udp-responses-sent-ipv6: 836277082 dns-tcp-responses-sent-ipv4: 296372765 dns-tcp-responses-sent-ipv6: 50162669