--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6306697427 dns-udp-queries-received-ipv6: 1556675459 dns-tcp-queries-received-ipv4: 609228758 dns-tcp-queries-received-ipv6: 73783248 dns-udp-responses-sent-ipv4: 5572008149 dns-udp-responses-sent-ipv6: 1467420912 dns-tcp-responses-sent-ipv4: 607451307 dns-tcp-responses-sent-ipv6: 57212175