--- version: rssac002v3 service: a.root-servers.net start-period: '2021-10-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4574654487 dns-udp-queries-received-ipv6: 1170355465 dns-tcp-queries-received-ipv4: 369521703 dns-tcp-queries-received-ipv6: 71948641 dns-udp-responses-sent-ipv4: 4434973858 dns-udp-responses-sent-ipv6: 1168436759 dns-tcp-responses-sent-ipv4: 366118970 dns-tcp-responses-sent-ipv6: 72480802