--- version: rssac002v3 service: j.root-servers.net start-period: '2021-06-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6558448073 dns-udp-queries-received-ipv6: 1409238764 dns-tcp-queries-received-ipv4: 548396373 dns-tcp-queries-received-ipv6: 103249998 dns-udp-responses-sent-ipv4: 6079597586 dns-udp-responses-sent-ipv6: 1396085187 dns-tcp-responses-sent-ipv4: 384104419 dns-tcp-responses-sent-ipv6: 99020951