--- version: rssac002v3 service: j.root-servers.net start-period: '2021-04-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6750727772 dns-udp-queries-received-ipv6: 1434835170 dns-tcp-queries-received-ipv4: 563155421 dns-tcp-queries-received-ipv6: 105561382 dns-udp-responses-sent-ipv4: 6268509586 dns-udp-responses-sent-ipv6: 1416484139 dns-tcp-responses-sent-ipv4: 397796206 dns-tcp-responses-sent-ipv6: 99701713