--- version: rssac002v3 service: i.root-servers.net start-period: '2021-08-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4214752662 dns-udp-queries-received-ipv6: 843096261 dns-tcp-queries-received-ipv4: 436363034 dns-tcp-queries-received-ipv6: 90303825 dns-udp-responses-sent-ipv4: 3781996058 dns-udp-responses-sent-ipv6: 826815152 dns-tcp-responses-sent-ipv4: 418064736 dns-tcp-responses-sent-ipv6: 89425602