--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5249398970 dns-udp-queries-received-ipv6: 1300520741 dns-tcp-queries-received-ipv4: 298994134 dns-tcp-queries-received-ipv6: 85871648 dns-udp-responses-sent-ipv4: 5216056620 dns-udp-responses-sent-ipv6: 1340279657 dns-tcp-responses-sent-ipv4: 288937330 dns-tcp-responses-sent-ipv6: 86304925