--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4896019365 dns-udp-queries-received-ipv6: 1101353955 dns-tcp-queries-received-ipv4: 542639026 dns-tcp-queries-received-ipv6: 146539508 dns-udp-responses-sent-ipv4: 4294936042 dns-udp-responses-sent-ipv6: 965668983 dns-tcp-responses-sent-ipv4: 530432156 dns-tcp-responses-sent-ipv6: 132756346