--- version: rssac002v3 service: i.root-servers.net start-period: '2021-10-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4610976039 dns-udp-queries-received-ipv6: 1003160112 dns-tcp-queries-received-ipv4: 419316662 dns-tcp-queries-received-ipv6: 124401448 dns-udp-responses-sent-ipv4: 4029926490 dns-udp-responses-sent-ipv6: 864784175 dns-tcp-responses-sent-ipv4: 387129695 dns-tcp-responses-sent-ipv6: 107152597