--- version: rssac002v3 service: i.root-servers.net start-period: '2021-02-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5053342009 dns-udp-queries-received-ipv6: 974230600 dns-tcp-queries-received-ipv4: 487067648 dns-tcp-queries-received-ipv6: 136607429 dns-udp-responses-sent-ipv4: 4003979985 dns-udp-responses-sent-ipv6: 883524261 dns-tcp-responses-sent-ipv4: 343342950 dns-tcp-responses-sent-ipv6: 123775442