--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4777446791 dns-udp-queries-received-ipv6: 907254747 dns-tcp-queries-received-ipv4: 515532937 dns-tcp-queries-received-ipv6: 93673469 dns-udp-responses-sent-ipv4: 3919266020 dns-udp-responses-sent-ipv6: 895078373 dns-tcp-responses-sent-ipv4: 403714789 dns-tcp-responses-sent-ipv6: 91482724