--- version: rssac002v3 service: a.root-servers.net start-period: '2021-05-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4717125929 dns-udp-queries-received-ipv6: 1013777466 dns-tcp-queries-received-ipv4: 278665306 dns-tcp-queries-received-ipv6: 125936203 dns-udp-responses-sent-ipv4: 4649098115 dns-udp-responses-sent-ipv6: 1030956957 dns-tcp-responses-sent-ipv4: 269932099 dns-tcp-responses-sent-ipv6: 126183370