--- version: rssac002v3 service: j.root-servers.net start-period: '2021-07-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6549989920 dns-udp-queries-received-ipv6: 1321740317 dns-tcp-queries-received-ipv4: 584515947 dns-tcp-queries-received-ipv6: 106382879 dns-udp-responses-sent-ipv4: 6052085162 dns-udp-responses-sent-ipv6: 1318412478 dns-tcp-responses-sent-ipv4: 410745297 dns-tcp-responses-sent-ipv6: 106208719