--- version: rssac002v4 service: j.root-servers.net start-period: '2021-12-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5885758882 dns-udp-queries-received-ipv6: 1356255200 dns-tcp-queries-received-ipv4: 399700420 dns-tcp-queries-received-ipv6: 109936054 dns-udp-responses-sent-ipv4: 5509191551 dns-udp-responses-sent-ipv6: 1327599439 dns-tcp-responses-sent-ipv4: 273362520 dns-tcp-responses-sent-ipv6: 89993233