--- version: rssac002v3 service: i.root-servers.net start-period: '2021-08-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5256405133 dns-udp-queries-received-ipv6: 1130717911 dns-tcp-queries-received-ipv4: 613415290 dns-tcp-queries-received-ipv6: 125581503 dns-udp-responses-sent-ipv4: 4490261736 dns-udp-responses-sent-ipv6: 1009957859 dns-tcp-responses-sent-ipv4: 578597633 dns-tcp-responses-sent-ipv6: 121666292