--- version: rssac002v3 service: i.root-servers.net start-period: '2021-10-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5196938100 dns-udp-queries-received-ipv6: 1243596098 dns-tcp-queries-received-ipv4: 495105916 dns-tcp-queries-received-ipv6: 161182941 dns-udp-responses-sent-ipv4: 4456314406 dns-udp-responses-sent-ipv6: 1036066432 dns-tcp-responses-sent-ipv4: 472319038 dns-tcp-responses-sent-ipv6: 143755948