--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4429333313 dns-udp-queries-received-ipv6: 819056353 dns-tcp-queries-received-ipv4: 404175797 dns-tcp-queries-received-ipv6: 123183245 dns-udp-responses-sent-ipv4: 3752775459 dns-udp-responses-sent-ipv6: 778841030 dns-tcp-responses-sent-ipv4: 351826252 dns-tcp-responses-sent-ipv6: 122770834