--- version: rssac002v3 service: i.root-servers.net start-period: '2021-08-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3904206549 dns-udp-queries-received-ipv6: 763155321 dns-tcp-queries-received-ipv4: 413547364 dns-tcp-queries-received-ipv6: 73449060 dns-udp-responses-sent-ipv4: 3496293881 dns-udp-responses-sent-ipv6: 755004839 dns-tcp-responses-sent-ipv4: 401706765 dns-tcp-responses-sent-ipv6: 73361790