--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5095108836 dns-udp-queries-received-ipv6: 946480258 dns-tcp-queries-received-ipv4: 413556308 dns-tcp-queries-received-ipv6: 113317621 dns-udp-responses-sent-ipv4: 4499226209 dns-udp-responses-sent-ipv6: 982978804 dns-tcp-responses-sent-ipv4: 362920351 dns-tcp-responses-sent-ipv6: 107531416