--- version: rssac002v4 service: a.root-servers.net start-period: '2022-02-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5342074795 dns-udp-queries-received-ipv6: 1414393418 dns-tcp-queries-received-ipv4: 285820446 dns-tcp-queries-received-ipv6: 55413369 dns-udp-responses-sent-ipv4: 5486747324 dns-udp-responses-sent-ipv6: 1440364622 dns-tcp-responses-sent-ipv4: 279960385 dns-tcp-responses-sent-ipv6: 55584610