--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5168435439 dns-udp-queries-received-ipv6: 1174469814 dns-tcp-queries-received-ipv4: 537883539 dns-tcp-queries-received-ipv6: 140954481 dns-udp-responses-sent-ipv4: 4581757795 dns-udp-responses-sent-ipv6: 1042365635 dns-tcp-responses-sent-ipv4: 499861284 dns-tcp-responses-sent-ipv6: 123575710