--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5713767113 dns-udp-queries-received-ipv6: 1130517199 dns-tcp-queries-received-ipv4: 711547362 dns-tcp-queries-received-ipv6: 140669102 dns-udp-responses-sent-ipv4: 4780958836 dns-udp-responses-sent-ipv6: 1000906509 dns-tcp-responses-sent-ipv4: 658593611 dns-tcp-responses-sent-ipv6: 125323717