--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4948384976 dns-udp-queries-received-ipv6: 941857322 dns-tcp-queries-received-ipv4: 482092381 dns-tcp-queries-received-ipv6: 102648976 dns-udp-responses-sent-ipv4: 4292683261 dns-udp-responses-sent-ipv6: 948871895 dns-tcp-responses-sent-ipv4: 409762420 dns-tcp-responses-sent-ipv6: 99116186