--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4876117821 dns-udp-queries-received-ipv6: 922511171 dns-tcp-queries-received-ipv4: 502007628 dns-tcp-queries-received-ipv6: 106164491 dns-udp-responses-sent-ipv4: 4246668709 dns-udp-responses-sent-ipv6: 928196587 dns-tcp-responses-sent-ipv4: 433538962 dns-tcp-responses-sent-ipv6: 102932101