--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6675344183 dns-udp-queries-received-ipv6: 1204569922 dns-tcp-queries-received-ipv4: 209896643 dns-tcp-queries-received-ipv6: 34147516 dns-udp-responses-sent-ipv4: 6494576599 dns-udp-responses-sent-ipv6: 1203974760 dns-tcp-responses-sent-ipv4: 205602367 dns-tcp-responses-sent-ipv6: 34849382