--- version: rssac002v4 service: j.root-servers.net start-period: '2021-12-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6125559176 dns-udp-queries-received-ipv6: 1460150306 dns-tcp-queries-received-ipv4: 438680243 dns-tcp-queries-received-ipv6: 68107137 dns-udp-responses-sent-ipv4: 5672379769 dns-udp-responses-sent-ipv6: 1420342715 dns-tcp-responses-sent-ipv4: 291743643 dns-tcp-responses-sent-ipv6: 65546503