--- version: rssac002v3 service: i.root-servers.net start-period: '2021-10-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5117638860 dns-udp-queries-received-ipv6: 1193210341 dns-tcp-queries-received-ipv4: 485721752 dns-tcp-queries-received-ipv6: 151567900 dns-udp-responses-sent-ipv4: 4409449250 dns-udp-responses-sent-ipv6: 1009495115 dns-tcp-responses-sent-ipv4: 457936490 dns-tcp-responses-sent-ipv6: 134255614