--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-24T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5469875010 dns-udp-queries-received-ipv6: 937002156 dns-tcp-queries-received-ipv4: 418536799 dns-tcp-queries-received-ipv6: 104077993 dns-udp-responses-sent-ipv4: 4360152406 dns-udp-responses-sent-ipv6: 892237155 dns-tcp-responses-sent-ipv4: 352802117 dns-tcp-responses-sent-ipv6: 97574813