--- version: rssac002v4 service: a.root-servers.net start-period: '2023-04-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6830981008 dns-udp-queries-received-ipv6: 2166278602 dns-tcp-queries-received-ipv4: 488056780 dns-tcp-queries-received-ipv6: 143530880 dns-udp-responses-sent-ipv4: 6169003916 dns-udp-responses-sent-ipv6: 1825246414 dns-tcp-responses-sent-ipv4: 402303552 dns-tcp-responses-sent-ipv6: 109811955