--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4832372960 dns-udp-queries-received-ipv6: 919226060 dns-tcp-queries-received-ipv4: 466675586 dns-tcp-queries-received-ipv6: 105035549 dns-udp-responses-sent-ipv4: 4255086326 dns-udp-responses-sent-ipv6: 930483953 dns-tcp-responses-sent-ipv4: 424828535 dns-tcp-responses-sent-ipv6: 100428436