--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4842397904 dns-udp-queries-received-ipv6: 1095889468 dns-tcp-queries-received-ipv4: 533612989 dns-tcp-queries-received-ipv6: 144828138 dns-udp-responses-sent-ipv4: 4242558001 dns-udp-responses-sent-ipv6: 961400575 dns-tcp-responses-sent-ipv4: 526257922 dns-tcp-responses-sent-ipv6: 132655523