--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4789257333 dns-udp-queries-received-ipv6: 935045137 dns-tcp-queries-received-ipv4: 523422303 dns-tcp-queries-received-ipv6: 104836003 dns-udp-responses-sent-ipv4: 4233657923 dns-udp-responses-sent-ipv6: 944528100 dns-tcp-responses-sent-ipv4: 471011757 dns-tcp-responses-sent-ipv6: 102248278