--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5235052877 dns-udp-queries-received-ipv6: 932047236 dns-tcp-queries-received-ipv4: 474417965 dns-tcp-queries-received-ipv6: 111339628 dns-udp-responses-sent-ipv4: 4492481599 dns-udp-responses-sent-ipv6: 959424605 dns-tcp-responses-sent-ipv4: 390204578 dns-tcp-responses-sent-ipv6: 103804614