--- version: rssac002v4 service: a.root-servers.net start-period: '2023-04-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7246827904 dns-udp-queries-received-ipv6: 2338133112 dns-tcp-queries-received-ipv4: 451441462 dns-tcp-queries-received-ipv6: 210310161 dns-udp-responses-sent-ipv4: 6635603573 dns-udp-responses-sent-ipv6: 1938851578 dns-tcp-responses-sent-ipv4: 392614090 dns-tcp-responses-sent-ipv6: 181104543