--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4951415055 dns-udp-queries-received-ipv6: 948767055 dns-tcp-queries-received-ipv4: 500340835 dns-tcp-queries-received-ipv6: 108255608 dns-udp-responses-sent-ipv4: 4273348221 dns-udp-responses-sent-ipv6: 950603399 dns-tcp-responses-sent-ipv4: 426230774 dns-tcp-responses-sent-ipv6: 104563226