--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5349820909 dns-udp-queries-received-ipv6: 1232039551 dns-tcp-queries-received-ipv4: 297170334 dns-tcp-queries-received-ipv6: 141521251 dns-udp-responses-sent-ipv4: 5184425816 dns-udp-responses-sent-ipv6: 1229766497 dns-tcp-responses-sent-ipv4: 285488888 dns-tcp-responses-sent-ipv6: 141715163