--- version: rssac002v4 service: a.root-servers.net start-period: '2023-04-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7594864904 dns-udp-queries-received-ipv6: 2623973392 dns-tcp-queries-received-ipv4: 463577517 dns-tcp-queries-received-ipv6: 203498095 dns-udp-responses-sent-ipv4: 6990668829 dns-udp-responses-sent-ipv6: 2166185678 dns-tcp-responses-sent-ipv4: 402264855 dns-tcp-responses-sent-ipv6: 152905219