--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4535899616 dns-udp-queries-received-ipv6: 862082691 dns-tcp-queries-received-ipv4: 489268571 dns-tcp-queries-received-ipv6: 112260862 dns-udp-responses-sent-ipv4: 3988228675 dns-udp-responses-sent-ipv6: 866239447 dns-tcp-responses-sent-ipv4: 448137716 dns-tcp-responses-sent-ipv6: 110691975