--- version: rssac002v4 service: a.root-servers.net start-period: '2021-10-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5446663913 dns-udp-queries-received-ipv6: 1379413818 dns-tcp-queries-received-ipv4: 298127274 dns-tcp-queries-received-ipv6: 100835839 dns-udp-responses-sent-ipv4: 5292706603 dns-udp-responses-sent-ipv6: 1377615318 dns-tcp-responses-sent-ipv4: 294431794 dns-tcp-responses-sent-ipv6: 100670482