--- version: rssac002v3 service: a.root-servers.net start-period: '2021-07-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7236291195 dns-udp-queries-received-ipv6: 1298088065 dns-tcp-queries-received-ipv4: 292987729 dns-tcp-queries-received-ipv6: 96109875 dns-udp-responses-sent-ipv4: 7102483688 dns-udp-responses-sent-ipv6: 1296535559 dns-tcp-responses-sent-ipv4: 287221601 dns-tcp-responses-sent-ipv6: 96354943