--- version: rssac002v4 service: a.root-servers.net start-period: '2021-10-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5428214927 dns-udp-queries-received-ipv6: 1363140763 dns-tcp-queries-received-ipv4: 293507993 dns-tcp-queries-received-ipv6: 76624918 dns-udp-responses-sent-ipv4: 5274640247 dns-udp-responses-sent-ipv6: 1361301107 dns-tcp-responses-sent-ipv4: 289702097 dns-tcp-responses-sent-ipv6: 76439632