--- version: rssac002v3 service: j.root-servers.net start-period: '2019-04-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6712176165 dns-udp-queries-received-ipv6: 955431506 dns-tcp-queries-received-ipv4: 498228271 dns-tcp-queries-received-ipv6: 70195126 dns-udp-responses-sent-ipv4: 6290889567 dns-udp-responses-sent-ipv6: 915760852 dns-tcp-responses-sent-ipv4: 375311480 dns-tcp-responses-sent-ipv6: 51917106