--- version: rssac002v3 service: i.root-servers.net start-period: '2021-03-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4766596717 dns-udp-queries-received-ipv6: 1180205268 dns-tcp-queries-received-ipv4: 443651484 dns-tcp-queries-received-ipv6: 164575981 dns-udp-responses-sent-ipv4: 4015734232 dns-udp-responses-sent-ipv6: 966563678 dns-tcp-responses-sent-ipv4: 356615219 dns-tcp-responses-sent-ipv6: 146478325