--- version: rssac002v3 service: i.root-servers.net start-period: '2021-03-24T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4866510503 dns-udp-queries-received-ipv6: 987191731 dns-tcp-queries-received-ipv4: 426000803 dns-tcp-queries-received-ipv6: 138668824 dns-udp-responses-sent-ipv4: 3991942599 dns-udp-responses-sent-ipv6: 904202100 dns-tcp-responses-sent-ipv4: 333496519 dns-tcp-responses-sent-ipv6: 140186831