--- version: rssac002v4 service: j.root-servers.net start-period: '2021-12-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5952919325 dns-udp-queries-received-ipv6: 1383605784 dns-tcp-queries-received-ipv4: 364642046 dns-tcp-queries-received-ipv6: 78015497 dns-udp-responses-sent-ipv4: 5597700757 dns-udp-responses-sent-ipv6: 1359546021 dns-tcp-responses-sent-ipv4: 256487448 dns-tcp-responses-sent-ipv6: 74499763