--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4839320917 dns-udp-queries-received-ipv6: 1035689200 dns-tcp-queries-received-ipv4: 421576991 dns-tcp-queries-received-ipv6: 136865586 dns-udp-responses-sent-ipv4: 3970284679 dns-udp-responses-sent-ipv6: 968987729 dns-tcp-responses-sent-ipv4: 355962023 dns-tcp-responses-sent-ipv6: 137151325