--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4648082533 dns-udp-queries-received-ipv6: 855166978 dns-tcp-queries-received-ipv4: 446580195 dns-tcp-queries-received-ipv6: 107661534 dns-udp-responses-sent-ipv4: 4170402394 dns-udp-responses-sent-ipv6: 843335398 dns-tcp-responses-sent-ipv4: 414544535 dns-tcp-responses-sent-ipv6: 105233450