--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4843137437 dns-udp-queries-received-ipv6: 1083291788 dns-tcp-queries-received-ipv4: 299344012 dns-tcp-queries-received-ipv6: 94102741 dns-udp-responses-sent-ipv4: 4851586079 dns-udp-responses-sent-ipv6: 1098602705 dns-tcp-responses-sent-ipv4: 288283275 dns-tcp-responses-sent-ipv6: 94220271