--- version: rssac002v3 service: i.root-servers.net start-period: '2021-08-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4875687940 dns-udp-queries-received-ipv6: 1190367282 dns-tcp-queries-received-ipv4: 571549203 dns-tcp-queries-received-ipv6: 161136474 dns-udp-responses-sent-ipv4: 3891493433 dns-udp-responses-sent-ipv6: 1009559815 dns-tcp-responses-sent-ipv4: 524739741 dns-tcp-responses-sent-ipv6: 159748265