--- version: rssac002v3 service: j.root-servers.net start-period: '2021-07-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5913203865 dns-udp-queries-received-ipv6: 1197375479 dns-tcp-queries-received-ipv4: 524395830 dns-tcp-queries-received-ipv6: 88035889 dns-udp-responses-sent-ipv4: 5439339106 dns-udp-responses-sent-ipv6: 1193464243 dns-tcp-responses-sent-ipv4: 365691865 dns-tcp-responses-sent-ipv6: 88092867