--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5271130605 dns-udp-queries-received-ipv6: 1180628801 dns-tcp-queries-received-ipv4: 568713925 dns-tcp-queries-received-ipv6: 160572145 dns-udp-responses-sent-ipv4: 4634542304 dns-udp-responses-sent-ipv6: 1040554934 dns-tcp-responses-sent-ipv4: 522448145 dns-tcp-responses-sent-ipv6: 142573068